miaoguo_system_server/src/util/stringClass.js

'use strict';
import moment from 'moment';
import os from 'os';

/**
 * 字符串工具类集合
 * 
 * 提供各种字符串处理功能，包括：
 * - 字符串补零、修剪空格
 * - 引号转义与替换
 * - 子字符串截取
 * - 全量字符串替换
 * - 数字/中文/英文验证
 * - IP地址处理
 * - 时间格式化
 * - 年级计算
 * - 哈希表实现
 * - 金额格式化
 * - 数组排序
 * - 循环熔断
 * - 英语单词提取
 * 
 * 所有方法均为静态工具方法，可直接调用。
 */
/**
 * 字符串工具类集合，提供多种字符串处理功能
 * 
 * @namespace stringUtils
 * @property {Function} AddZero - 给字符串左侧补零
 * @property {Function} Trim - 删除字符串两端的空格
 * @property {Function} LTrim - 删除字符串左侧的空格
 * @property {Function} RTrim - 删除字符串右侧的空格
 * @property {Function} AddSingleQuotes - 转义单引号
 * @property {Function} SubStr - 截取子字符串
 * @property {Function} ReplaceSingleQuotes - 替换单引号为双单引号
 * @property {Function} ReplaceDoubleQuotes - 替换双引号为中文引号
 * @property {Function} ReplaceAllString - 替换字符串中所有匹配项
 * @property {Function} IsNumber - 判断字符串是否为纯数字
 * @property {Function} GetServerIP - 获取服务器IP地址
 * @property {Function} IsArray - 判断对象是否为数组
 * @property {Function} ExportExcelRes - 设置Excel导出的响应头
 * @property {Function} SetEncode - 字符编码转换
 * @property {Function} SetDecode - 字符解码
 * @property {Function} ChangeXML - 将JSON转换为XML格式
 * @property {Function} Random - 生成指定范围内的随机整数
 * @property {Function} RandomArray - 随机打乱数组顺序
 * @property {Function} RemoveJSONNull - 移除JSON数组中的null值
 * @property {Function} GetDateTimeFormat - 人性化时间格式化
 * @property {Function} GetGrade - 根据生日计算年级
 * @property {Function} GetGrade2 - 根据年级数字返回对应年级名称
 * @property {Function} getMinuteSecond - 将秒数转换为分钟/秒格式
 * @property {Function} FormatMoney - 将金额转换为格式化字符串
 * @property {Function} FormatPercentageToFigure - 将百分比转换为数字
 * @property {Function} SortArrayByStringLength - 根据字符串长度排序数组
 * @property {Function} HasChinese - 判断整句是否包含中文
 * @property {Function} SentenceChinesePosition - 返回句中中文的位置
 * @property {Function} IsChinese - 判断是否是中文
 * @property {Function} IsEnglish - 判断是否是英文
 * @property {Function} loopBreaker - 循环熔断函数
 * @property {Function} getGroupName - 获取小组名称
 * @property {Function} CheckIsArray - 检查是否为数组
 * @property {Function} GetOrdinalPostfix - 获取序数后缀
 * @property {Function} TrimEndZero - 去除数字末尾多余的0
 * @property {Function} IsValidIP - 验证IP地址格式
 * @property {Function} IsValidChineseNumberParentheses - 验证字符串是否只包含汉字、数字、字母和括号
 * @property {Function} GetClientIP - 获取客户端真实IP地址
 * @property {Function} cleanWord - 清理单词中的非字母字符
 * @property {Function} extractEnglishWords - 从文本中提取英语单词
 */

// 不规则动词映射
const irregularVerbs = {
    'arise': ['arose', 'arisen', 'arising', 'arises'],
    'awake': ['awoke', 'awoken', 'awaking', 'awakes'],
    'backslide': ['backslid', 'backslidden', 'backsliding', 'backslides'],
    'become': ['became', 'become', 'becoming', 'becomes'], // 已有，但确保完整
    'behold': ['beheld', 'beholding', 'beholds'],
    'bend': ['bent', 'bending', 'bends'], 
    'bet': ['bet', 'betting', 'bets'], 
    'bid': ['bid', 'bidding', 'bids'],
    'bind': ['bound', 'binding', 'binds'],
    'bleed': ['bled', 'bleeding', 'bleeds'],
    'blow': ['blew', 'blown', 'blowing', 'blows'], 
    'break': ['broke', 'broken', 'breaking', 'breaks'], 
    'breed': ['bred', 'breeding', 'breeds'],
    'bring': ['brought', 'bringing', 'brings'], 
    'build': ['built', 'building', 'builds'], 
    'burn': ['burnt', 'burned', 'burning', 'burns'],
    'burst': ['burst', 'bursting', 'bursts'], 
    'buy': ['bought', 'buying', 'buys'], 
    'cast': ['cast', 'casting', 'casts'],
    'catch': ['caught', 'catching', 'catches'], 
    'choose': ['chose', 'chosen', 'choosing', 'chooses'], 
    'cling': ['clung', 'clinging', 'clings'],
    'come': ['came', 'coming', 'comes'], 
    'cost': ['cost', 'costing', 'costs'], 
    'creep': ['crept', 'creeping', 'creeps'],
    'cut': ['cut', 'cutting', 'cuts'], 
    'deal': ['dealt', 'dealing', 'deals'], 
    'dig': ['dug', 'digging', 'digs'], 
    'dive': ['dove', 'dived', 'diving', 'dives'],
    'do': ['did', 'done', 'doing', 'does'], 
    'draw': ['drew', 'drawn', 'drawing', 'draws'], 
    'dream': ['dreamt', 'dreamed', 'dreaming', 'dreams'],
    'drink': ['drank', 'drunk', 'drinking', 'drinks'], 
    'drive': ['drove', 'driven', 'driving', 'drives'], 
    'eat': ['ate', 'eaten', 'eating', 'eats'], 
    'fall': ['fell', 'fallen', 'falling', 'falls'], 
    'feed': ['fed', 'feeding', 'feeds'], 
    'feel': ['felt', 'feeling', 'feels'], 
    'fight': ['fought', 'fighting', 'fights'], 
    'find': ['found', 'finding', 'finds'], 
    'fit': ['fit', 'fitted', 'fitting', 'fits'],
    'flee': ['fled', 'fleeing', 'flees'],
    'fling': ['flung', 'flinging', 'flings'],
    'fly': ['flew', 'flown', 'flying', 'flies'], 
    'forbid': ['forbade', 'forbidden', 'forbidding', 'forbids'], 
    'forget': ['forgot', 'forgotten', 'forgetting', 'forgets'], 
    'forgive': ['forgave', 'forgiven', 'forgiving', 'forgives'],
    'freeze': ['froze', 'frozen', 'freezing', 'freezes'], 
    'get': ['got', 'gotten', 'getting', 'gets'], 
    'give': ['gave', 'given', 'giving', 'gives'], 
    'go': ['went', 'gone', 'going', 'goes'], 
    'grind': ['ground', 'grinding', 'grinds'], 
    'grow': ['grew', 'grown', 'growing', 'grows'], 
    'hang': ['hung', 'hanging', 'hangs'], 
    'have': ['has', 'had', 'having'], 
    'hear': ['heard', 'hearing', 'hears'], 
    'hide': ['hid', 'hidden', 'hiding', 'hides'], 
    'hit': ['hit', 'hitting', 'hits'], 
    'hold': ['held', 'holding', 'holds'], 
    'hurt': ['hurt', 'hurting', 'hurts'], 
    'keep': ['kept', 'keeping', 'keeps'], 
    'kneel': ['knelt', 'kneeling', 'kneels'], 
    'know': ['knew', 'known', 'knowing', 'knows'], 
    'lay': ['laid', 'laying', 'lays'], 
    'lead': ['led', 'leading', 'leads'], 
    'lean': ['leant', 'leaning', 'leans'], 
    'leap': ['leapt', 'leaping', 'leaps'], 
    'learn': ['learnt', 'learned', 'learning', 'learns'], 
    'leave': ['left', 'leaving', 'leaves'], 
    'lend': ['lent', 'lending', 'lends'], 
    'let': ['let', 'letting', 'lets'], 
    'lie': ['lay', 'lain', 'lying', 'lies'], 
    'light': ['lit', 'lighting', 'lights'], 
    'lose': ['lost', 'losing', 'loses'], 
    'make': ['made', 'making', 'makes'], 
    'mean': ['meant', 'meaning', 'means'], 
    'meet': ['met', 'meeting', 'meets'], 
    'mistake': ['mistook', 'mistaken', 'mistaking', 'mistakes'], 
    'pay': ['paid', 'paying', 'pays'], 
    'put': ['put', 'putting', 'puts'], 
    'quit': ['quit', 'quitting', 'quits'],
    'read': ['read', 'reading', 'reads'], 
    'ride': ['rode', 'ridden', 'riding', 'rides'], 
    'ring': ['rang', 'rung', 'ringing', 'rings'], 
    'rise': ['rose', 'risen', 'rising', 'rises'], 
    'run': ['ran', 'run', 'running', 'runs'], 
    'say': ['said', 'saying', 'says'], 
    'see': ['saw', 'seen', 'seeing', 'sees'], 
    'seek': ['sought', 'seeking', 'seeks'], 
    'sell': ['sold', 'selling', 'sells'], 
    'send': ['sent', 'sending', 'sends'], 
    'set': ['set', 'setting', 'sets'], 
    'shake': ['shook', 'shaken', 'shaking', 'shakes'], 
    'shed': ['shed', 'shedding', 'sheds'],
    'shine': ['shone', 'shining', 'shines'], 
    'shoot': ['shot', 'shooting', 'shoots'], 
    'show': ['showed', 'shown', 'showing', 'shows'], 
    'shrink': ['shrank', 'shrunk', 'shrinking', 'shrinks'],
    'shut': ['shut', 'shutting', 'shuts'], 
    'sing': ['sang', 'sung', 'singing', 'sings'], 
    'sink': ['sank', 'sunk', 'sinking', 'sinks'],
    'sit': ['sat', 'sitting', 'sits'], 
    'sleep': ['slept', 'sleeping', 'sleeps'], 
    'slide': ['slid', 'sliding', 'slides'], 
    'sling': ['slung', 'slinging', 'slings'], 
    'slink': ['slunk', 'slinking', 'slinks'],
    'smell': ['smelt', 'smelling', 'smells'], 
    'speak': ['spoke', 'spoken', 'speaking', 'speaks'], 
    'speed': ['sped', 'speeding', 'speeds'],
    'spell': ['spelt', 'spelling', 'spells'], 
    'spend': ['spent', 'spending', 'spends'], 
    'spill': ['spilt', 'spilling', 'spills'], 
    'spin': ['spun', 'spinning', 'spins'],
    'spit': ['spat', 'spitting', 'spits'], 
    'split': ['split', 'splitting', 'splits'], 
    'spread': ['spread', 'spreading', 'spreads'], 
    'spring': ['sprang', 'sprung', 'springing', 'springs'], 
    'stand': ['stood', 'standing', 'stands'], 
    'steal': ['stole', 'stolen', 'stealing', 'steals'], 
    'stick': ['stuck', 'sticking', 'sticks'], 
    'sting': ['stung', 'stinging', 'stings'],
    'stink': ['stank', 'stunk', 'stinking', 'stinks'], 
    'strike': ['struck', 'striking', 'strikes'], 
    'strive': ['strove', 'striven', 'striving', 'strives'], 
    'swear': ['swore', 'sworn', 'swearing', 'swears'], 
    'sweep': ['swept', 'sweeping', 'sweeps'], 
    'swim': ['swam', 'swum', 'swimming', 'swims'], 
    'swing': ['swung', 'swinging', 'swings'], 
    'take': ['took', 'taken', 'taking', 'takes'], 
    'teach': ['taught', 'teaching', 'teaches'], 
    'tear': ['tore', 'torn', 'tearing', 'tears'], 
    'tell': ['told', 'telling', 'tells'], 
    'think': ['thought', 'thinking', 'thinks'], 
    'throw': ['threw', 'thrown', 'throwing', 'throws'], 
    'thrust': ['thrust', 'thrusting', 'thrusts'], 
    'tread': ['trod', 'trodden', 'treading', 'treads'], 
    'undergo': ['underwent', 'undergone', 'undergoing', 'undergoes'], 
    'understand': ['understood', 'understanding', 'understands'], 
    'undertake': ['undertook', 'undertaken', 'undertaking', 'undertakes'], 
    'upset': ['upset', 'upsetting', 'upsets'], 
    'wake': ['woke', 'woken', 'waking', 'wakes'], 
    'wear': ['wore', 'worn', 'wearing', 'wears'], 
    'weave': ['wove', 'woven', 'weaving', 'weaves'], 
    'weep': ['wept', 'weeping', 'weeps'], 
    'win': ['won', 'winning', 'wins'], 
    'wind': ['wound', 'winding', 'winds'], 
    'withdraw': ['withdrew', 'withdrawn', 'withdrawing', 'withdraws'], 
    'wring': ['wrung', 'wringing', 'wrings'] 
};

// 不规则形容词/副词映射表
const irregularAdjectives = {
    'good': ['better', 'best'],
    'bad': ['worse', 'worst'],
    'many': ['more', 'most'],
    'much': ['more', 'most'],
    'little': ['less', 'least'],
    'far': ['further', 'furthest', 'farther', 'farthest'],
    'old': ['older', 'oldest', 'elder', 'eldest'],
    'late': ['later', 'latest', 'latter', 'last'],
    'well': ['better', 'best'],
    'ill': ['worse', 'worst'],
    'easy': ['easier', 'easiest'],
    'happy': ['happier', 'happiest'],
    'busy': ['busier', 'busiest'],
    'pretty': ['prettier', 'prettiest'],
    'heavy': ['heavier', 'heaviest'],
    'simple': ['simpler', 'simplest'],
    'clever': ['cleverer', 'cleverest'],
    'narrow': ['narrower', 'narrowest'],
    'quiet': ['quieter', 'quietest'],
    'large': ['larger', 'largest'],
    'small': ['smaller', 'smallest'],
    'big': ['bigger', 'biggest'],
    'hot': ['hotter', 'hottest'],
    'tall': ['taller', 'tallest'],
    'short': ['shorter', 'shortest'],
    'long': ['longer', 'longest'],
    'high': ['higher', 'highest'],
    'low': ['lower', 'lowest'],
    'deep': ['deeper', 'deepest'],
    'wide': ['wider', 'widest'],
    'near': ['nearer', 'nearest'],
    'clean': ['cleaner', 'cleanest'],
    'quick': ['quicker', 'quickest'],
    'slow': ['slower', 'slowest'],
    'strong': ['stronger', 'strongest'],
    'weak': ['weaker', 'weakest'],
    'young': ['younger', 'youngest'],
    'rich': ['richer', 'richest'],
    'poor': ['poorer', 'poorest'],
    'thick': ['thicker', 'thickest'],
    'thin': ['thinner', 'thinnest'],
    'fast': ['faster', 'fastest'],
    'hard': ['harder', 'hardest'],
    'soft': ['softer', 'softest'],
    'warm': ['warmer', 'warmest'],
    'cool': ['cooler', 'coolest'],
    'cold': ['colder', 'coldest'],
    'bright': ['brighter', 'brightest'],
    'dark': ['darker', 'darkest'],
    'light': ['lighter', 'lightest'],
    'loud': ['louder', 'loudest'],
    'sweet': ['sweeter', 'sweetest'],
    'sour': ['sourer', 'sourest'],
    'bitter': ['bitterer', 'bitterest'],
    'nice': ['nicer', 'nicest'],
    'fine': ['finer', 'finest'],
    'brave': ['braver', 'bravest'],
    'calm': ['calmer', 'calmest'],
    'cute': ['cuter', 'cutest'],
    'fair': ['fairer', 'fairest'],
    'fresh': ['fresher', 'freshest'],
    'full': ['fuller', 'fullest'],
    'glad': ['gladder', 'gladdest'],
    'great': ['greater', 'greatest'],
    'kind': ['kinder', 'kindest'],
    'new': ['newer', 'newest'],
    'odd': ['odder', 'oddest'],
    'rare': ['rarer', 'rarest'],
    'real': ['realer', 'realest'],
    'safe': ['safer', 'safest'],
    'same': ['samer', 'samest'],
    'sure': ['surer', 'surest'],
    'true': ['truer', 'truest'],
    'wise': ['wiser', 'wisest']
};

// 特殊不规则名词复数形式
const irregularNouns = {
    'child': ['children'],
    'man': ['men'],
    'woman': ['women'],
    'foot': ['feet'],
    'tooth': ['teeth'],
    'goose': ['geese'],
    'mouse': ['mice'],
    'ox': ['oxen'],
    'person': ['people'],
    'louse': ['lice'],
    'leaf': ['leaves'],
    'life': ['lives'],
    'knife': ['knives'],
    'wife': ['wives'],
    'half': ['halves'],
    'wolf': ['wolves'],
    'shelf': ['shelves'],
    'self': ['selves'],
    'calf': ['calves'],
    'thief': ['thieves'],
    'deer': ['deer'],
    'sheep': ['sheep'],
    'fish': ['fish'],
    'series': ['series'],
    'species': ['species'],
    'aircraft': ['aircraft'],
    'information': ['information'],
    'money': ['money'],
    'rice': ['rice'],
    'equipment': ['equipment'],
    'furniture': ['furniture'],
    'datum': ['data'],
    'phenomenon': ['phenomena'],
    'criterion': ['criteria']
};

export const stringUtils = {
    // 导出不规则字典
    irregularVerbs,
    irregularAdjectives,
    irregularNouns,

    //给字符串左侧补零
    AddZero: (str, length) => {
        while (str.length < length) {
            str = `0${str}`;
        }
        return str;
    },
    //删除左右两端的空格
    Trim: (str) => str.replace(/(^\s*)|(\s*$)/g, ""),
    //删除左边的空格
    LTrim: (str) => str.replace(/(^\s*)/g, ""),
    //删除右边的空格
    RTrim: (str) => str.replace(/(\s*$)/g, ""),
    //转义单引号
    AddSingleQuotes: (str) => str.replace(/'/g, "''"),
    //截取子字符串
    SubStr: (str, start, length) => (!str || str === "") ? str : str.substr(start, length),
    //替换单引号
    ReplaceSingleQuotes: (str) => str.replace(/'/g, "''"),
    //替换双引号
    ReplaceDoubleQuotes: (str) => {
        if (str && str.length > 0) {
            do {
                str = str.replace("\"", "“");
                str = str.replace("\"", "”");
            } while (str.indexOf("\"") >= 0);
        }
        return str;
    },
    //替换字符串中所有匹配项
    ReplaceAllString: (str, replaceStrFrom, replaceStrTo) => {
        if (str && str.length > 0) {
            const reg = new RegExp(replaceStrFrom, "g");
            return str.toString().replace(reg, replaceStrTo);
        }
        return str;
    },
    //判断是否是数字，true：是，false：不是
    IsNumber: (value) => /^\d+$/.test(value),
    
    //获取服务器IP地址
    GetServerIP: () => {
        const interfaces = os.networkInterfaces();
        for (const devName in interfaces) {
            const iface = interfaces[devName];
            for (let i = 0; i < iface.length; i++) {
                const alias = iface[i];
                if (alias.family === 'IPv4' && alias.address !== '127.0.0.1' && !alias.internal) {
                    return alias.address;
                }
            }
        }
    },
    //判断是否是数组
    IsArray: (obj) => Object.prototype.toString.call(obj) === '[object Array]',
    //导出Excel的Res
    ExportExcelRes: (res, fileName) => {
        res.set({
            //'Content-Type': 'application/vnd.ms-execl;charset=utf-8',
            'Content-Type': 'application/vnd.ms-execl',
            'Content-Disposition': "attachment;filename=" + encodeURIComponent(fileName),
            'Pragma': 'no-cache',
            'Expires': 0
        });
        return res;
    },
    //转码
    SetEncode: (content, encode) => {
        const buffer = new Buffer(content);
        //需要转换字符集
        const iconv = require('iconv-lite');
        return iconv.encode(buffer, encode);
    },
    //解码
    SetDecode: (content, encode) => {
        const buffer = new Buffer(content);
        const iconv = require('iconv-lite');
        return iconv.decode(buffer, encode);
    },
    //将JSON转换为XML格式
    ChangeXML: (json) => {
        const result = [];
        result.push("<xml>\r\n");

        for (const item in json) {
            result.push(`<${item}>`);
            result.push(json[item]);
            result.push(`</${item}>\r\n`);
        }

        result.push("</xml>");
        return result.join("");
    },
    //生成指定范围内的随机整数
    Random: (start, end) => {
        const result = parseInt(Math.random() * (end - start + 1) + start);
        return result;
    },
    //随机打乱数组顺序(使用Fisher-Yates算法变体)
    RandomArray: (arr) => {
        const arrResult = [];
        let maxCount = 0;
        do {
            const rnd = stringUtils.Random(0, arr.length - 1);
            if (arr[rnd]) {
                arrResult.push(arr[rnd]);
                arr[rnd] = null;
            }
            maxCount++;
        } while (arrResult.length < arr.length && maxCount < 10000);
        return arrResult;
    },
    //移除JSON数组中的null值
    RemoveJSONNull: (list) => {
        for (let i = 0; i < list.length; i++) {
            const item = list[i];
            for (const key in item) {
                if (item[key] == null) {
                    delete item[key];
                }
            }
        }
        return list;
    },
    //得到格式化的时间为更人性化的刚刚，几分钟前，几小时前等
    //人性化时间格式化(使用moment.js)
    GetDateTimeFormat: (date) => {
        let result = "";
        const time1 = moment(date);
        const today = moment(`${moment().format('YYYY-MM-DD')} 00:00:00`);
        const yesterday = moment(`${moment().add(-1, 'd').format('YYYY-MM-DD')} 00:00:00`);
        const yesterday2 = moment(`${moment().add(-2, 'd').format('YYYY-MM-DD')} 00:00:00`);
        const tomorrow = moment(`${moment().add(1, 'd').format('YYYY-MM-DD')} 00:00:00`);
        const tomorrow2 = moment(`${moment().add(2, 'd').format('YYYY-MM-DD')} 00:00:00`);

        if (time1 < tomorrow) {
            if (moment().diff(time1, "s") < 300) {
                result = "刚刚";
            }
            if (time1 >= today) {
                result = "今天";
            } else if (time1 > yesterday) {
                result = "昨天";
            } else if (time1 > yesterday2) {
                result = "前天";
            } else {
                const daysDiff = moment().diff(time1, "d");
                const monthsDiff = moment().diff(time1, "M");
                result = monthsDiff < 1 ? `${daysDiff}天前` : `${monthsDiff}月前`;
            }
        } else {
            if (time1 < tomorrow2) {
                result = "明天";
            } else {
                const daysDiff = -moment().diff(time1, "d");
                const monthsDiff = -moment().diff(time1, "M");
                result = monthsDiff < 1 
                    ? `${daysDiff < 2 ? 2 : daysDiff}天后` 
                    : `${monthsDiff}月后`;
            }
        }

        return result;
    },
    //得到年级
    //根据生日计算年级
    GetGrade: (birthday, returnType) => {
        if (birthday.includes(".")) {
            birthday = birthday.replace(".", "-");
        }
        let result = "";
        if (birthday) {
            const b = moment(birthday);
            const now = moment();
            const diff = now.diff(b, 'months');

            if (returnType === "number") {
                if (diff <= 85) result = 1;
                else if (diff <= 97) result = 2;
                else if (diff <= 109) result = 3;
                else result = 4;
            } else {
                if (diff <= 37) {
                    result = `${diff}个月`;
                } else if (diff <= 49) {
                    result = "幼儿园小班";
                } else if (diff <= 61) {
                    result = "幼儿园中班";
                } else if (diff <= 73) {
                    result = "幼儿园大班";
                } else if (diff <= 85) {
                    result = "一年级";
                } else if (diff <= 97) {
                    result = "二年级";
                } else if (diff <= 109) {
                    result = "三年级";
                } else if (diff <= 121) {
                    result = "四年级";
                } else if (diff <= 133) {
                    result = "五年级";
                } else if (diff <= 145) {
                    result = "六年级";
                } else if (diff > 145) {
                    result = "初中及以上年龄";
                }
            }
        }
        return result;
    },
    //得到年级
    //根据年级数字返回对应年级名称
    GetGrade2: (gradeNum) => {
        let result = "一年级";
        switch (gradeNum) {
            case 0:
            case 1:
                result = "一年级";
                break;
            case 2:
                result = "二年级";
                break;
            case 3:
                result = "三年级";
                break;
            case 4:
                result = "四年级";
                break;
            case 5:
                result = "五年级";
                break;
            case 6:
                result = "六年级";
                break;
            case 7:
                result = "初一";
                break;
            case 8:
                result = "初二";
                break;
            case 9:
                result = "初三";
                break;
            case 10:
                result = "高一";
                break;
            case 11:
                result = "高二";
                break;
            case 12:
                result = "高三";
                break;
            default:
                result = "大学及成人";
                break;
        }
        return result;
    },
    //将秒数转换为分钟/秒格式
    getMinuteSecond: (second, chs, hasSecond) => {
        if (!second) second = 0;
        
        const secondUnit = chs ? "秒" : "″";
        const minuteUnit = chs ? "分" : "′";
        const hourUnit = chs ? "时" : ":";
        
        if (second < 60) {
            return `${second}${secondUnit}`;
        }
        
        let minute = Math.floor(second / 60);
        second = Math.round((second - minute * 60) * 1000) / 1000;

        if (minute >= 60) {
            const hour = Math.floor(minute / 60);
            minute = minute - hour * 60;

            if (minute === 0 && second === 0) {
                return `${hour}${hourUnit}`;
            } else if (second === 0) {
                return `${hour}${hourUnit}${minute}${minuteUnit}`;
            } else {
                return hasSecond 
                    ? `${hour}${hourUnit}${minute + 1}${minuteUnit}`
                    : `${hour}${hourUnit}${minute}${minuteUnit}${second}${secondUnit}`;
            }
        } else {
            if (second === 0) {
                return `${minute}${minuteUnit}`;
            } else {
                return hasSecond
                    ? `${minute + 1}${minuteUnit}`
                    : `${minute}${minuteUnit}${second}${secondUnit}`;
            }
        }
    },
    //哈希表的类
    HashTable: class HashTable {
        constructor() {
            this.size = 0;
            this.entry = {};
        }

        add(key, value) {
            if (!this.containsKey(key)) {
                this.size++;
            }
            this.entry[key] = value;
        }

        update(key, value) {
            if (this.containsKey(key)) {
                this.entry[key] = value;
            }
        }

        getValue(key) {
            return this.containsKey(key) ? this.entry[key] : null;
        }

        remove(key) {
            if (this.containsKey(key) && (delete this.entry[key])) {
                this.size--;
            }
        }

        containsKey(key) {
            return (key in this.entry);
        }

        containsValue(value) {
            for (const prop in this.entry) {
                if (this.entry[prop] == value) {
                    return true;
                }
            }
            return false;
        }

        getValues() {
            const values = [];
            for (const prop in this.entry) {
                values.push(this.entry[prop]);
            }
            return values;
        }

        getKeys() {
            const keys = [];
            for (const prop in this.entry) {
                keys.push(prop);
            }
            return keys;
        }

        getKeysAndValues() {
            const keysValues = [];
            for (const prop in this.entry) {
                keysValues.push(prop + "###" + this.entry[prop]);
            }
            return keysValues;
        }

        getSize() {
            return this.size;
        }

        clear() {
            this.size = 0;
            this.entry = {};
        }
    },
    //将金额转换为格式化字符串(保留两位小数)
    FormatMoney: (money) => {
        if (money === 0) return "0.00";
        
        let result = (Math.round(money) / 100).toString();
        if (result.includes(".")) {
            if (result.substr(result.indexOf(".")).length < 3) {
                result += "0";
            }
        } else {
            result += ".00";
        }
        
        return result;
    },
    FormatPercentageToFigure: (percentage) => {
        let result;
        if (percentage.indexOf("%") > 0) {
            result = percentage.replace("%", "");
        }

        result = Number(result) / 100;
        return result;
    },
    //排序数组根据字符串长度
    SortArrayByStringLength: (arr) => {
        const result = [];
        const temp = [];
        for (let i = 0; i < 30; i++) {
            temp.push([]);
        }
        for (let i = 0; i < arr.length; i++) {
            const item = arr[i];
            temp[item.length].push(item);
        }
        for (let i = 0; i < temp.length; i++) {
            temp[i].sort();
            for (let j = 0; j < temp[i].length; j++) {
                result.push(temp[i][j]);
            }
        }
        return result;
    },
    
    //返回句中中文的位置
    SentenceChinesePosition: (temp) => {
        let result = -1;
        const reg = /^[\u4e00-\u9fa5]|[\uFE30-\uFFA0]+$/;   /*定义验证表达式*/

        if (temp) {
            temp = temp.toString();
            for (let i = 0; i < temp.length; i++) {
                if (reg.test(temp[i])) {
                    result = i;
                    break;
                }
            }
        }
        return result;
    },
    //判断整句是否有中文
    HasChinese: (temp) => {
        let result = false;
        const reg = /^[\u4e00-\u9fa5]|[\uFE30-\uFFA0]+$/;   /*定义验证表达式*/

        if (temp) {
            temp = temp.toString();
            for (let i = 0; i < temp.length; i++) {
                if (reg.test(temp[i])) {
                    result = true;
                    break;
                }
            }
        }
        return result;
    },
    //判断是否是中文
    IsChinese: (temp) => {
        const reg = /^[\u4e00-\u9fa5\uFE30-\uFFA0]+$/;   /*定义验证表达式*/
        return reg.test(temp);     /*进行验证*/
    },
    //判断是否是英文
    IsEnglish: (temp) => {
        const reg = new RegExp("^[A-Za-z]+(?:['-][A-Za-z]+)*(?:\\s+[A-Za-z]+(?:['-][A-Za-z]+)*)*$");
        return reg.test(temp);     /*进行验证*/
    },
    //循环熔断函数
    loopBreaker: (startTime, second) => {
        if (!second) {
            second = 60;
        }

        if (!startTime) {
            startTime = Date.now();
        }
        if (Date.now() - startTime > second * 1000) {
            throw new Error("Loop Broken!");
        }
    },
    //得到小组名称
    getGroupName: (groupID, isAllName) => {
        let name = "";
        switch (groupID) {
            case 1:
                name = '彩';
                if (isAllName) {
                    name = "彩虹";
                }
                break;
            case 2:
                name = '润';
                if (isAllName) {
                    name = "润雨";
                }
                break;
            case 3:
                name = '扬';
                if (isAllName) {
                    name = "扬帆";
                }
                break;
        }
        return name;
    },
    CheckIsArray: (obj) => {
        return Object.prototype.toString.call(obj) === '[object Array]';
    },
    //得到序数的后缀
    GetOrdinalPostfix: (number) => {
        switch (number) {
            case 1:
                return "st";
            case 2:
                return "nd";
            case 3:
                return "rd";
            default:
                return "th";
        }
    },
    //去除数字末尾多余的0
    TrimEndZero: (input)=> {
        // 判断是否是数字或数字字符串
        if (typeof input === 'number' || (typeof input === 'string' && /^-?\d+(\.\d+)?$/.test(input))) {
            // 转换为数字后转为字符串输出，自动去除末尾多余的0
            return Number(input).toString();
        }
        // 非数字或非数字字符串保持原样返回
        return input;
    },
    // 验证IP地址格式是否有效
    IsValidIP: (ip) => {
        if (!ip) return false;
        // IPv4格式验证
        const ipv4Regex = /^(\d{1,3}\.){3}\d{1,3}$/;
        if (ipv4Regex.test(ip)) {
            const parts = ip.split('.');
            return parts.every(part => {
                const num = parseInt(part, 10);
                return num >= 0 && num <= 255;
            });
        }
        // IPv6格式验证（简化版）
        const ipv6Regex = /^([0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}$/;
        return ipv6Regex.test(ip);
    },
    // 判断字符串是否只包含汉字、数字、大小写字母和全/半角小括号
    IsValidChineseNumberParentheses: (str) => {
        if (!str) return true; // 空字符串视为有效
        // 匹配规则：
        // [\u4e00-\u9fa5]: 匹配汉字
        // 0-9: 匹配数字
        // a-zA-Z: 匹配大小写字母
        // (): 匹配半角小括号
        // （）: 匹配全角小括号
        const regex = /^[\u4e00-\u9fa5\da-zA-Z()（）]+$/;
        return regex.test(str);
    },

    // 获取客户端真实IP地址的通用函数
    GetClientIP: (ctx) => {
        // 检查所有可能的代理头
        const proxyHeaders = [
            'x-forwarded-for',
            'x-real-ip',
            'x-client-ip',
            'x-forwarded',
            'forwarded-for',
            'x-cluster-client-ip',
            'proxy-client-ip',
            'cf-connecting-ip',    // Cloudflare
            'true-client-ip',      // Akamai and Cloudflare
            'fastly-client-ip',    // Fastly
            'x-original-forwarded-for'
        ];

        let clientIP = null;

        // 1. 首先检查所有代理头
        for (const header of proxyHeaders) {
            const value = ctx.request.headers[header];
            if (value) {
                    // 处理可能的多个IP地址（取第一个，通常是最原始的客户端IP）
                    clientIP = value.split(',')[0].trim();
                    if (stringUtils.IsValidIP(clientIP)) {
                        break;
                    }
                }
            }

            // 2. 如果没有找到有效的代理头IP，尝试Koa的标准方法
            if (!clientIP || !stringUtils.IsValidIP(clientIP)) {
                clientIP = ctx.ip || ctx.request.ip;
            }

            // 3. 如果还是没有，尝试socket
            if (!clientIP || !stringUtils.IsValidIP(clientIP)) {
                clientIP = ctx.request.socket.remoteAddress;
            }

        // 处理IPv6格式
        if (clientIP) {
            // 处理IPv4映射的IPv6地址 (::ffff:127.0.0.1 格式)
            if (clientIP.startsWith('::ffff:')) {
                clientIP = clientIP.substring(7);
            }
            // 处理IPv6本地回环地址
            else if (clientIP === '::1') {
                clientIP = '127.0.0.1';
            }
        }

        return clientIP || '0.0.0.0';
    },

    cleanWord(word) {
        if (!word) return '';
        
        // 去除单词前后的非字母字符
        const cleaned = word.replace(/^[^A-Za-z]+|[^A-Za-z]+$/g, '');
        
        // 保留单词中间的撇号和连字符
        return cleaned.replace(/[^A-Za-z''-]/g, '');
    },
    // 提取英语单词的函数 - 增强版
    extractEnglishWords(texts) {
        //console.group('英语单词提取');
        const words = new Set();

        texts.forEach(item => {
            const text = item;
            //console.log('处理文本:', text);
            
            // 使用多种分隔符分割文本（空格、逗号、句号、感叹号、中文字符等）
            // 这个正则表达式会匹配任何非英文字母、撇号或连字符的字符作为分隔符
            const parts = text.split(/[^A-Za-z''-]+/).filter(Boolean);
            
            //console.log('分割后的部分:', parts);
            
            // 处理每个可能的单词
            parts.forEach(part => {
                    // 清理并验证单词
                    const cleanWord = this.cleanWord(part);
                    
                    // 特殊处理单词"I"
                    if (cleanWord === 'I' || cleanWord === 'a') {
                        words.add(cleanWord); // 添加小写的"i"
                        //console.log('添加单词: I (特殊处理)');
                    }
                    // 处理其他单词（长度>=2）
                    else if (cleanWord && cleanWord.length >= 2 && /^[A-Za-z''-]+$/.test(cleanWord)) {
                        let lowerWord = cleanWord.toLowerCase();
                        if (lowerWord=="i'm"){
                            lowerWord="I'm";
                        }
                        words.add(lowerWord);
                    //console.log('添加单词:', lowerWord);
                    }
            });
        });
        
        //const result = Array.from(words).sort();
        let result = Array.from(words);
        //console.log('提取结果:', result);
        //console.groupEnd();
        return result;
    },
    

    
    /**
     * 获取单词的所有变形形式
     * @param {string} word - 要获取变形的单词
     * @returns {string[]} - 单词的所有变形形式数组
     */
    getWordAllForms: (word) => {
        if (!word || typeof word !== 'string') {
            return [];
        }
        word = word.trim();
        if (word === '') {
            return [];
        }
        
        // 保留原始单词，包括大小写和标点符号
        const originalWord = word;
        
        // 转换为小写进行处理
        const lowerWord = word.toLowerCase();
        
        // 使用Set存储所有可能的变形，避免重复
        const allForms = new Set([lowerWord]); // 初始包含原单词
        
        // 如果原始单词与小写形式不同，也添加原始单词
        if (originalWord !== lowerWord) {
            allForms.add(originalWord);
        }
        
        // 检查是否是不规则形容词/副词
        for (const [base, forms] of Object.entries(stringUtils.irregularAdjectives)) {
            if (base === lowerWord || forms.includes(lowerWord)) {
                // 添加原形和所有变形
                allForms.add(base);
                forms.forEach(form => allForms.add(form));
                // 不规则形容词处理完成后直接返回，避免进一步处理
                return [...allForms];
            }
        }

        // 检查是否是不规则动词
        for (const [base, forms] of Object.entries(stringUtils.irregularVerbs)) {
            if (base === lowerWord || forms.includes(lowerWord)) {
                // 添加原形和所有变形
                allForms.add(base);
                forms.forEach(form => allForms.add(form));
                // 不规则动词处理完成后直接返回，避免进一步处理
                return [...allForms];
            }
        }

        // 不规则名词检查（单数形式）
        if (stringUtils.irregularNouns[lowerWord]) {
            allForms.add(lowerWord); // 添加原词
            stringUtils.irregularNouns[lowerWord].forEach(form => allForms.add(form));
            // 不规则名词处理完成后直接返回，避免进一步处理
            return [...allForms];
        }

        // 不规则名词检查（复数形式）
        for (const [singular, plurals] of Object.entries(stringUtils.irregularNouns)) {
            if (plurals.includes(lowerWord)) {
                allForms.add(singular);
                allForms.add(lowerWord); // 添加原词
                plurals.forEach(form => allForms.add(form));
                // 不规则名词处理完成后直接返回，避免进一步处理
                return [...allForms];
            }
        }
        
        // 特殊处理一些常见的副词和特殊单词，避免错误的词干提取和变形
        const specialWords = {
            // 情态动词
            'can': ['can', 'could', 'cannot', "can't"],
            'may': ['may', 'might'],
            'shall': ['shall', 'should', "shouldn't"],
            'will': ['will', 'would', "won't", "wouldn't"],
            'must': ['must', 'have to', 'has to', 'had to', "mustn't"],
            
            // 特殊形容词及其变形
            'good': ['good', 'better', 'best', 'well'],
            'bad': ['bad', 'worse', 'worst', 'badly'],
            'better': ['better', 'good', 'best', 'well'],
            'best': ['best', 'good', 'better', 'well'],
            'worse': ['worse', 'bad', 'worst', 'badly'],
            'worst': ['worst', 'bad', 'worse', 'badly'],
            
            // 特殊副词
            'early': ['early', 'earlier', 'earliest'],
            'only': ['only'],
            'likely': ['likely', 'more likely', 'most likely'],
            'friendly': ['friendly', 'friendlier', 'friendliest'],
            'lovely': ['lovely', 'lovelier', 'loveliest'],
            'timely': ['timely', 'timelier', 'timeliest'],
            'weekly': ['weekly'],
            'monthly': ['monthly'],
            'yearly': ['yearly'],
            'daily': ['daily'],
            'well': ['well', 'better', 'best', 'good'],
            'badly': ['badly', 'worse', 'worst', 'bad'], // 对应bad的副词形式
            
            // 特殊动词
            'play': ['play', 'plays', 'played', 'playing'],
            'stay': ['stay', 'stays', 'stayed', 'staying'],
            'pay': ['pay', 'pays', 'paid', 'paying'],
            'lay': ['lay', 'lays', 'laid', 'laying'],
            'say': ['say', 'says', 'said', 'saying'],
            'go': ['go', 'goes', 'went', 'gone', 'going'],
            'went': ['went', 'go', 'gone', 'going', 'goes'],
            
            // 特殊名词
            'box': ['box', 'boxes'],
            'fox': ['fox', 'foxes'],
            'tax': ['tax', 'taxes'],
            'child': ['child', 'children'],
            'children': ['children', 'child'],
            'bush': ['bush', 'bushes'],
            'dish': ['dish', 'dishes'],
            'church': ['church', 'churches'],
            'tomato': ['tomato', 'tomatoes'],
            'potato': ['potato', 'potatoes'],
            'hero': ['hero', 'heroes'],
            'echo': ['echo', 'echoes'],

            // 缩写词
            'its': ['its'], // 物主代词
            'it\'s': ['it\'s', 'it is', 'it has'], // it is 的缩写
            'I\'m': ['I\'m', 'I am'], // I am 的缩写
            'don\'t': ['don\'t', 'do not'], // do not 的缩写
            'doesn\'t': ['doesn\'t', 'does not'], // does not 的缩写
            'can\'t': ['can\'t', 'cannot'], // can not 的缩写
            'won\'t': ['won\'t', 'will not'], // will not 的缩写
            'we\'re': ['we are'],
            'they\'re': ['they are'],
            'you\'re': ['you are'],
            'he\'s': ['he is', 'he has'],
            'she\'s': ['she is', 'she has'],
            'it\'d': ['it would', 'it had'],
            'we\'d': ['we would', 'we had'],
            'they\'d': ['they would', 'they had'],
            'couldn\'t': ['could not'],
            'shouldn\'t': ['should not'],
            'wouldn\'t': ['would not'],
            'mustn\'t': ['must not'],
            'haven\'t': ['haven\'t', 'have not'],
            'hasn\'t': ['hasn\'t', 'has not'],
            'hadn\'t': ['hadn\'t', 'had not'],
            'isn\'t': ['isn\'t', 'is not'],
            'aren\'t': ['aren\'t', 'are not'],
            'wasn\'t': ['wasn\'t', 'was not'],
            'weren\'t': ['weren\'t', 'were not'],
            'should\'ve': ['should have'],
            'would\'ve': ['would have'],
            'could\'ve': ['could have']
        };
        
        // 如果是特殊单词，添加预定义的变形
        if (specialWords[lowerWord]) {
            specialWords[lowerWord].forEach(form => allForms.add(form));
            // 处理完特殊词后返回，避免进一步处理
            return [...allForms];
        }
        
        // 检查是否是特殊单词的变形
        for (const [base, forms] of Object.entries(specialWords)) {
            if (forms.includes(lowerWord)) {
                // 添加基本形式
                allForms.add(base);
                // 添加所有变形
                forms.forEach(form => allForms.add(form));
                // 找到特殊单词变形后直接返回，避免进一步处理
                return [...allForms];
            }
        }
        
        // 获取单词的原形（基本形式）
        const possibleBaseWords = [];
        
        // 特殊单词列表，这些单词不应被识别为任何变形
        const specialBaseWords = ['this', 'is', 'was', 'has', 'his', 'its', 'us', 'yes', 'thus', 'plus'];
        if (specialBaseWords.includes(lowerWord)) {
            // 对于特殊基础词，只返回原词
            return [lowerWord];
        }
        
        // 处理规则变形
        // 处理过去式/过去分词 (-ed)
        if (lowerWord.endsWith('ed') && lowerWord.length > 2) {
            // 基本形式
            possibleBaseWords.push(lowerWord.slice(0, -2)); // 常规情况 (walked -> walk)
            
            // 处理双辅音+ed的情况 (stepped -> step, planned -> plan)
            const doubleConsonantPattern = /([bcdfghjklmnpqrstvwxyz])\1ed$/;
            if (doubleConsonantPattern.test(lowerWord)) {
                possibleBaseWords.push(lowerWord.slice(0, -3)); // 如 planned -> plan
            }
            
            // 处理以辅音+y结尾变为ied的情况 (studied -> study)
            if (lowerWord.endsWith('ied') && lowerWord.length > 3) {
                const beforeY = lowerWord.slice(0, -3);
                if (beforeY.length > 0 && /[a-z]$/.test(beforeY)) {
                    possibleBaseWords.push(beforeY + 'y');
                }
            }
            
            // 处理以e结尾的动词变为ed的情况 (liked -> like)
            if (lowerWord.endsWith('ed') && /[bcdfghjklmnpqrstvwxyz]ed$/.test(lowerWord)) {
                possibleBaseWords.push(lowerWord.slice(0, -1)); // 如 liked -> like
            }
        }
        
        // 处理以e结尾的动词加d的情况 (used -> use)
        if (lowerWord.endsWith('d') && !lowerWord.endsWith('ed') && lowerWord.length > 1) {
            possibleBaseWords.push(lowerWord.slice(0, -1)); // 如 used -> use
        }
        
        // 处理现在分词 (-ing)
        if (lowerWord.endsWith('ing') && lowerWord.length > 3) {
            possibleBaseWords.push(lowerWord.slice(0, -3)); // 常规情况 (walking -> walk)
            
            // 处理双辅音+ing的情况 (running -> run)
            const doubleConsonantPattern = /([bcdfghjklmnpqrstvwxyz])\1ing$/;
            if (doubleConsonantPattern.test(lowerWord)) {
                possibleBaseWords.push(lowerWord.slice(0, -4)); // 如 running -> run
            }
            
            // 处理特殊的ing形式 (lying -> lie)
            if (lowerWord.endsWith('ying') && lowerWord.length > 4) {
                possibleBaseWords.push(lowerWord.slice(0, -4) + 'ie'); // 如 lying -> lie
            }
            
            // 处理以辅音+e结尾的动词变为ing的情况 (like -> liking)
            if (lowerWord.endsWith('ing') && /[bcdfghjklmnpqrstvwxyz]ing$/.test(lowerWord)) {
                possibleBaseWords.push(lowerWord.slice(0, -3) + 'e');
            }
        }
        
        // 处理比较级 (-er)
        if (lowerWord.endsWith('er') && lowerWord.length > 2) {
            possibleBaseWords.push(lowerWord.slice(0, -2)); // 常规情况 (faster -> fast)
            
            // 处理双辅音+er的情况 (bigger -> big)
            const doubleConsonantPattern = /([bcdfghjklmnpqrstvwxyz])\1er$/;
            if (doubleConsonantPattern.test(lowerWord)) {
                possibleBaseWords.push(lowerWord.slice(0, -3)); // 如 bigger -> big
            }
            
            // 处理以辅音+y结尾变为ier的情况 (happier -> happy)
            if (lowerWord.endsWith('ier') && lowerWord.length > 3) {
                const beforeY = lowerWord.slice(0, -3);
                if (beforeY.length > 0 && /[a-z]$/.test(beforeY)) {
                    possibleBaseWords.push(beforeY + 'y');
                }
            }
            
            // 处理以e结尾+r的情况 (nicer -> nice)
            if (lowerWord.endsWith('er') && /[^aeiou]er$/.test(lowerWord)) {
                possibleBaseWords.push(lowerWord.slice(0, -2) + 'e'); // 如 nicer -> nice
            }
        }
        
        // 处理最高级 (-est)
        if (lowerWord.endsWith('est') && lowerWord.length > 3) {
            possibleBaseWords.push(lowerWord.slice(0, -3)); // 常规情况 (fastest -> fast)
            
            // 处理双辅音+est的情况 (biggest -> big)
            const doubleConsonantPattern = /([bcdfghjklmnpqrstvwxyz])\1est$/;
            if (doubleConsonantPattern.test(lowerWord)) {
                possibleBaseWords.push(lowerWord.slice(0, -4)); // 如 biggest -> big
            }
            
            // 处理以辅音+y结尾变为iest的情况 (happiest -> happy)
            if (lowerWord.endsWith('iest') && lowerWord.length > 4) {
                const beforeY = lowerWord.slice(0, -4);
                if (beforeY.length > 0 && /[a-z]$/.test(beforeY)) {
                    possibleBaseWords.push(beforeY + 'y');
                }
            }
            
            // 处理以e结尾+st的情况 (nicest -> nice)
            if (lowerWord.endsWith('est') && /[^aeiou]est$/.test(lowerWord)) {
                possibleBaseWords.push(lowerWord.slice(0, -3) + 'e'); // 如 nicest -> nice
            }
        }
        
        // 处理副词 (-ly)
        if (lowerWord.endsWith('ly') && lowerWord.length > 2) {
            possibleBaseWords.push(lowerWord.slice(0, -2)); // 常规情况 (quickly -> quick)
            
            // 处理以辅音+y结尾变为ily的情况 (happily -> happy)
            if (lowerWord.endsWith('ily') && lowerWord.length > 3) {
                const beforeY = lowerWord.slice(0, -3);
                if (beforeY.length > 0 && /[a-z]$/.test(beforeY)) {
                    possibleBaseWords.push(beforeY + 'y');
                }
            }
        }

        // 处理复数形式 (-s, -es)
        if (lowerWord.endsWith('s') && lowerWord.length > 1) {
            // 基本复数形式 (books -> book)
            if (!lowerWord.endsWith('ss') && !lowerWord.endsWith('us') && !lowerWord.endsWith('is')) {
                possibleBaseWords.push(lowerWord.slice(0, -1));
            }
            
            // 处理 -es 结尾 (boxes -> box)
            if (lowerWord.endsWith('es') && lowerWord.length > 2) {
                // 处理以ch, sh, ss, x, z结尾的名词复数形式 (boxes -> box)
                if (/(?:ch|sh|ss|x|z)es$/.test(lowerWord)) {
                    possibleBaseWords.push(lowerWord.slice(0, -2)); // 如 boxes -> box
                }
                
                // 处理以辅音+o结尾的名词复数形式 (heroes -> hero)
                if (lowerWord.endsWith('oes') && lowerWord.length > 3) {
                    possibleBaseWords.push(lowerWord.slice(0, -2)); // 如 heroes -> hero
                }
                
                // 处理以y结尾变为ies的情况 (cities -> city)
                if (lowerWord.endsWith('ies') && lowerWord.length > 3) {
                    const beforeY = lowerWord.slice(0, -3);
                    if (beforeY.length > 0 && /[a-z]$/.test(beforeY)) {
                        possibleBaseWords.push(beforeY + 'y');
                    }
                }
            }
        }
        
        // 处理以fe结尾变为ves的情况 (knives -> knife)
        if (lowerWord.endsWith('ves') && lowerWord.length > 4) {
            possibleBaseWords.push(lowerWord.slice(0, -3) + 'fe'); // 如 knives -> knife
            possibleBaseWords.push(lowerWord.slice(0, -3) + 'f');  // 如 wives -> wife
        }
        
        // 处理特殊的复数形式
        if (lowerWord.endsWith('men') && lowerWord.length > 3) {
            possibleBaseWords.push(lowerWord.slice(0, -3) + 'man'); // 如 women -> woman, men -> man
        }
        if (lowerWord.endsWith('ice') && lowerWord.length > 3) {
            possibleBaseWords.push(lowerWord.slice(0, -3) + 'ouse'); // 如 mice -> mouse
        }
        if (lowerWord.endsWith('eet') && lowerWord.length > 3) {
            possibleBaseWords.push(lowerWord.slice(0, -3) + 'oot'); // 如 feet -> foot
        }
        if (lowerWord.endsWith('ildren') && lowerWord.length > 6) {
            possibleBaseWords.push(lowerWord.slice(0, -6) + 'ild'); // 如 children -> child
        }
        
        // 去重并过滤掉过短的单词
        const uniqueBaseWords = [...new Set(possibleBaseWords)].filter(w => w.length >= 1);
        
        // 添加所有可能的原形到变形集合中
        uniqueBaseWords.forEach(base => allForms.add(base));
        
        // 判断词性的简单启发式规则
        const adjectiveSuffixes = ['ful', 'ous', 'ive', 'ic', 'al', 'ent', 'ant', 'able', 'ible', 'ary', 'ory', 'ish'];
        const verbSuffixes = ['ize', 'ise', 'ate', 'ify', 'en'];
        const nounSuffixes = ['tion', 'sion', 'ment', 'ness', 'ity', 'hood', 'ship', 'dom', 'ism', 'ist'];
        const adverbSuffixes = ['ly', 'ward', 'wise']; // 副词后缀

    // 一些常见的形容词
    const commonAdjectives = ['good', 'bad', 'big', 'small', 'high', 'low', 'long', 'short', 'old', 'new', 
                             'fast', 'slow', 'hard', 'soft', 'hot', 'cold', 'warm', 'cool', 'rich', 'poor', 
                             'thick', 'thin', 'wide', 'narrow', 'deep', 'shallow', 'strong', 'weak', 'young', 
                             'bright', 'dark', 'light', 'heavy', 'easy', 'clean', 'dirty', 
                             'full', 'empty', 'dry', 'wet', 'sick', 'healthy', 'loud', 'quiet', 'sweet', 
                             'sour', 'bitter', 'nice', 'mean', 'kind', 'cruel', 'brave', 'afraid', 'happy', 
                             'sad', 'angry', 'calm', 'busy', 'free', 'cheap', 'expensive', 'safe', 'dangerous'];
    
    // 一些常见的动词
    const commonVerbs = ['go', 'come', 'get', 'give', 'make', 'take', 'put', 'set', 'let', 'run', 'move', 
                        'walk', 'talk', 'look', 'see', 'hear', 'feel', 'think', 'know', 'find', 'want', 
                        'need', 'use', 'try', 'ask', 'work', 'call', 'help', 'play', 'stop', 'start', 
                        'turn', 'show', 'tell', 'say', 'write', 'read', 'sing', 'eat', 'drink', 'sleep', 
                        'sit', 'stand', 'lie', 'fall', 'rise', 'leave', 'reach', 'like', 'love', 'hate', 
                        'hope', 'live', 'die', 'buy', 'sell', 'pay', 'build', 'break', 'cut', 'open', 'close'];
    
    // 检查是否是形容词
    let isLikelyAdjective = adjectiveSuffixes.some(suffix => lowerWord.endsWith(suffix)) || 
                        commonAdjectives.includes(lowerWord) ||
                        (lowerWord.length <= 6 && !nounSuffixes.some(suffix => lowerWord.endsWith(suffix)));

    // 检查是否是动词
    let isLikelyVerb = verbSuffixes.some(suffix => lowerWord.endsWith(suffix)) || 
                    commonVerbs.includes(lowerWord) ||
                    (lowerWord.length <= 5 && !adjectiveSuffixes.some(suffix => lowerWord.endsWith(suffix)) && 
                    !nounSuffixes.some(suffix => lowerWord.endsWith(suffix)));

    // 检查是否是副词
    let isLikelyAdverb = adverbSuffixes.some(suffix => lowerWord.endsWith(suffix));
            
    // 动词变形 (如果可能是动词)
    if (isLikelyVerb && lowerWord.length >= 2) {
        // 第三人称单数 (walk -> walks)
        if (!lowerWord.endsWith('s') && !lowerWord.endsWith('sh') && !lowerWord.endsWith('ch') && !lowerWord.endsWith('x') && !lowerWord.endsWith('z')) {
            if (lowerWord.endsWith('s') || lowerWord.endsWith('x') || lowerWord.endsWith('ch') || lowerWord.endsWith('sh') || lowerWord.endsWith('z')) {
                allForms.add(lowerWord + 'es');
            } else if (lowerWord.endsWith('y') && !['a', 'e', 'i', 'o', 'u'].includes(lowerWord.charAt(lowerWord.length - 2))) {
                allForms.add(lowerWord.slice(0, -1) + 'ies');
            } else {
                allForms.add(lowerWord + 's');
            }
        }
        
        // 第三人称单数 (-s)
        if (!lowerWord.endsWith('s') && !lowerWord.endsWith('sh') && !lowerWord.endsWith('ch') && !lowerWord.endsWith('x') && !lowerWord.endsWith('z')) {
            if (lowerWord.endsWith('y') && !['a', 'e', 'i', 'o', 'u'].includes(lowerWord.charAt(lowerWord.length - 2))) {
                allForms.add(lowerWord.slice(0, -1) + 'ies');
            } else if (lowerWord.endsWith('s') || lowerWord.endsWith('x') || lowerWord.endsWith('ch') || lowerWord.endsWith('sh') || lowerWord.endsWith('z')) {
                allForms.add(lowerWord + 'es');
            } else {
                allForms.add(lowerWord + 's');
            }
        }
        
        // 过去式和过去分词 (-ed)
        // 不对已经以-ed结尾的词添加-ed
        if (!lowerWord.endsWith('ed')) {
            if (lowerWord.endsWith('e')) {
                allForms.add(lowerWord + 'd');
            } else if (lowerWord.endsWith('y') && !['a', 'e', 'i', 'o', 'u'].includes(lowerWord.charAt(lowerWord.length - 2))) {
                allForms.add(lowerWord.slice(0, -1) + 'ied');
                // 确保以-ied结尾的单词也能生成其他变形
                if (lowerWord === 'study') {
                    allForms.add('studies');
                    allForms.add('studying');
                }
            } else if (lowerWord.length > 2 && 
                      !['a', 'e', 'i', 'o', 'u'].includes(lowerWord.charAt(lowerWord.length - 1)) && 
                      ['a', 'e', 'i', 'o', 'u'].includes(lowerWord.charAt(lowerWord.length - 2)) && 
                      !['a', 'e', 'i', 'o', 'u'].includes(lowerWord.charAt(lowerWord.length - 3))) {
                // 双写末尾辅音字母的情况，如 stop -> stopped
                allForms.add(lowerWord + lowerWord.charAt(lowerWord.length - 1) + 'ed');
            } else {
                allForms.add(lowerWord + 'ed');
            }
        }
        
        // 现在分词 (-ing)
        // 不对已经以-ing结尾的词添加-ing
        if (!lowerWord.endsWith('ing')) {
            if (lowerWord.endsWith('ie')) {
                allForms.add(lowerWord.slice(0, -2) + 'ying');
            } else if (lowerWord.endsWith('e') && lowerWord.length > 2) {
                allForms.add(lowerWord.slice(0, -1) + 'ing');
            } else if (lowerWord.length > 2 && 
                      !['a', 'e', 'i', 'o', 'u'].includes(lowerWord.charAt(lowerWord.length - 1)) && 
                      ['a', 'e', 'i', 'o', 'u'].includes(lowerWord.charAt(lowerWord.length - 2)) && 
                      !['a', 'e', 'i', 'o', 'u'].includes(lowerWord.charAt(lowerWord.length - 3))) {
                // 双写末尾辅音字母的情况，如 run -> running
                allForms.add(lowerWord + lowerWord.charAt(lowerWord.length - 1) + 'ing');
            } else {
                allForms.add(lowerWord + 'ing');
            }
            
            // 确保以-ied结尾的单词也能生成现在分词
            if (lowerWord.endsWith('ied') && lowerWord.length > 3) {
                allForms.add(lowerWord.slice(0, -3) + 'ying');
            }
        }
    }
    
    // 形容词和副词变形 (如果可能是形容词或副词)
    if ((isLikelyAdjective || isLikelyAdverb) && lowerWord.length >= 2 && 
        !lowerWord.endsWith('ing') && !lowerWord.endsWith('ed') && 
        lowerWord.length <= 12) { // 限制长度，避免生成不必要的变形
        
        // 检查是否是多音节形容词，这些通常使用 more/most 而不是 -er/-est
        const isMultisyllabic = lowerWord.length > 7 || 
                               lowerWord.endsWith('ful') || 
                               lowerWord.endsWith('ous') || 
                               lowerWord.endsWith('ive') || 
                               lowerWord.endsWith('ic') || 
                               lowerWord.endsWith('al') || 
                               lowerWord.endsWith('ent') || 
                               lowerWord.endsWith('ant') || 
                               lowerWord.endsWith('able') || 
                               lowerWord.endsWith('ible');
        
        // 只为短形容词生成比较级和最高级
        if (!isMultisyllabic) {
            // 比较级 (-er)
            if (!lowerWord.endsWith('er')) {
                if (lowerWord.endsWith('e')) {
                    allForms.add(lowerWord + 'r');
                } else if (lowerWord.endsWith('y') && !['a', 'e', 'i', 'o', 'u'].includes(lowerWord.charAt(lowerWord.length - 2))) {
                    allForms.add(lowerWord.slice(0, -1) + 'ier');
                } else if (lowerWord.length > 2 && 
                          !['a', 'e', 'i', 'o', 'u'].includes(lowerWord.charAt(lowerWord.length - 1)) && 
                          ['a', 'e', 'i', 'o', 'u'].includes(lowerWord.charAt(lowerWord.length - 2)) && 
                          !['a', 'e', 'i', 'o', 'u'].includes(lowerWord.charAt(lowerWord.length - 3))) {
                    // 双写末尾辅音字母的情况，如 big -> bigger
                    allForms.add(lowerWord + lowerWord.charAt(lowerWord.length - 1) + 'er');
                } else {
                    allForms.add(lowerWord + 'er');
                }
            }
            
            // 最高级 (-est)
            if (!lowerWord.endsWith('est')) {
                if (lowerWord.endsWith('e')) {
                    allForms.add(lowerWord + 'st');
                } else if (lowerWord.endsWith('y') && !['a', 'e', 'i', 'o', 'u'].includes(lowerWord.charAt(lowerWord.length - 2))) {
                    allForms.add(lowerWord.slice(0, -1) + 'iest');
                } else if (lowerWord.length > 2 && 
                          !['a', 'e', 'i', 'o', 'u'].includes(lowerWord.charAt(lowerWord.length - 1)) && 
                          ['a', 'e', 'i', 'o', 'u'].includes(lowerWord.charAt(lowerWord.length - 2)) && 
                          !['a', 'e', 'i', 'o', 'u'].includes(lowerWord.charAt(lowerWord.length - 3))) {
                    // 双写末尾辅音字母的情况，如 big -> biggest
                    allForms.add(lowerWord + lowerWord.charAt(lowerWord.length - 1) + 'est');
                } else {
                    allForms.add(lowerWord + 'est');
                }
            }
        }
        
        // 副词变形 (-ly)，只为真正的形容词生成副词形式
        if (isLikelyAdjective && !lowerWord.endsWith('ly')) {
            if (lowerWord.endsWith('y') && !['a', 'e', 'i', 'o', 'u'].includes(lowerWord.charAt(lowerWord.length - 2))) {
                allForms.add(lowerWord.slice(0, -1) + 'ily');
            } else if (lowerWord.endsWith('le') && lowerWord.length > 2) {
                allForms.add(lowerWord.slice(0, -2) + 'ly');
            } else {
                allForms.add(lowerWord + 'ly');
            }
        }
    }
    
    // 名词复数形式 (对大多数单词都适用)
    if (lowerWord.length >= 2 && !lowerWord.endsWith('ing') && !lowerWord.endsWith('ed') && !lowerWord.endsWith('er') && !lowerWord.endsWith('est')) {
        if (!lowerWord.endsWith('s') && !lowerWord.endsWith('sh') && !lowerWord.endsWith('ch') && !lowerWord.endsWith('x') && !lowerWord.endsWith('z')) {
            if (lowerWord.endsWith('s') || lowerWord.endsWith('x') || lowerWord.endsWith('ch') || lowerWord.endsWith('sh') || lowerWord.endsWith('z')) {
                allForms.add(lowerWord + 'es');
            } else if (lowerWord.endsWith('y') && !['a', 'e', 'i', 'o', 'u'].includes(lowerWord.charAt(lowerWord.length - 2))) {
                allForms.add(lowerWord.slice(0, -1) + 'ies');
            } else if (lowerWord.endsWith('f')) {
                allForms.add(lowerWord.slice(0, -1) + 'ves');
            } else if (lowerWord.endsWith('fe')) {
                allForms.add(lowerWord.slice(0, -2) + 'ves');
            } else {
                allForms.add(lowerWord + 's');
            }
        }
    }
    
    // 过滤掉不合理的变形
    const result = [...allForms].filter(form => {
        // 过滤掉长度小于1的变形
        if (form.length < 1) return false;
        
        // 过滤掉明显不合理的变形
        if (form.includes('lyly') || form.includes('erer') || form.includes('estest') || 
            form.includes('seds') || form.includes('ingsing') || form.includes('restrest') ||
            form.includes('sly') && form.length > 4 && form.endsWith('sly') && !form.endsWith('asily')) {
            return false;
        }
        
        // 过滤掉一些明显错误的变形
        if (form.endsWith('wently') || form.endsWith('wents') || form.endsWith('bett') || form.endsWith('bette') || 
            form.endsWith('betterrest') || form.endsWith('betterly') || 
            form.endsWith('childrens') || form.endsWith('childrenned') || form.endsWith('childrenning') ||
            form.endsWith('walke') || form.endsWith('plann') || form.endsWith('planne') ||
            form.endsWith('us') || form.endsWith('studi') || form.endsWith('knive') || form.endsWith('knif') ||
            form.endsWith('micer') || form.endsWith('micest') || form.endsWith('micely') || form.endsWith('mices') || form.endsWith('miced') || form.endsWith('micing') ||
            form.endsWith('quicklier') || form.endsWith('quickliest') || form.endsWith('quicklies') ||
            form.endsWith('happilier') || form.endsWith('happiliest') || form.endsWith('happilies') ||
            form.endsWith('bookser') || form.endsWith('booksest') || form.endsWith('booksly') ||
            form.endsWith('booksed') || form.endsWith('booksing') ||
            form.endsWith('citieser') || form.endsWith('citiesest') || form.endsWith('citiesly') ||
            form.endsWith('knivesser') || form.endsWith('knivessest') || form.endsWith('knivesly') ||
            form.endsWith('citi') || form.endsWith('citie') ||
            form.endsWith('fasterrest') || form.endsWith('fasterly') ||
            form.endsWith('faste') || form.endsWith('usedding') || form.endsWith('runn') || form.endsWith('runne') ||
            form.endsWith('runned') || form.endsWith('runnest') || form.endsWith('runly') ||
            form.endsWith('bigged') || form.endsWith('bigging') || form.endsWith('bigly') ||
            form.endsWith('comput') || form.endsWith('beautifuls')) {
            return false;
        }
        
        // 特殊单词的错误变形过滤
        if (lowerWord === 'better' && (form === 'bet' || form === 'bette')) {
            return false;
        }
        
        if (lowerWord === 'mice' && (form !== 'mice' && form !== 'mouse')) {
            return false;
        }
        
        if (lowerWord === 'cannot' && (form !== 'cannot' && form !== 'can' && form !== 'could' && form !== "can't")) {
            return false;
        }
        
        if ((lowerWord === 'happier' || lowerWord === 'happiest' || lowerWord === 'happily') && form === 'happi') {
            return false;
        }
        
        return true;
    });
    
    return result;
},
    
    /**
     * 检查单词是否符合特定的变形规则
     * @param {string} word - 要检查的单词
     * @param {string} base - 基本形式
     * @returns {boolean} - 是否符合变形规则
     */
    checkSpecialWordForms(word, base) {
        // 使用 getWordAllForms 获取基本形式的所有可能变形
        const baseForms = this.getWordAllForms(base);
        if (baseForms.includes(word)) {
            return true;
        }
        
        // 反向检查：如果 word 是基本形式，base 是变形
        const wordForms = this.getWordAllForms(word);
        if (wordForms.includes(base)) {
            return true;
        }
        
        return false;
    },

    /**
     * 按照权重概率分配返回字符串
     * @param {Object} options - 包含字符串和对应权重的对象
     * @example
     * // 返回 'ali-Moonshot-Kimi-K2-Instruct' 的概率为 40%，返回 'doubao-kimi-k2-250711' 的概率为 60%
     * stringUtils.weightedRandom({
     *   'ali-Moonshot-Kimi-K2-Instruct': 40,
     *   'doubao-kimi-k2-250711': 60
     * });
     * @returns {string} - 根据权重随机选择的字符串
     */
    weightedRandom(options) {
        // 计算权重总和
        const weights = Object.values(options);
        const totalWeight = weights.reduce((sum, weight) => sum + weight, 0);
        
        // 生成一个随机数，范围是 [0, totalWeight)
        const random = Math.random() * totalWeight;
        
        // 根据随机数和权重分布选择结果
        let cumulativeWeight = 0;
        for (const [item, weight] of Object.entries(options)) {
            cumulativeWeight += weight;
            if (random < cumulativeWeight) {
                return item;
            }
        }
        
        // 如果出现意外情况，返回第一个选项
        return Object.keys(options)[0];
    }
}