题解 | #密码强度等级#

const readline = require("readline");

const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
});

const ScoreList = [
    { maxScore: 95, minScore: 90, output: "VERY_SECURE" },
    { maxScore: 89, minScore: 80, output: "SECURE" },
    { maxScore: 79, minScore: 70, output: "VERY_STRONG" },
    { maxScore: 69, minScore: 60, output: "STRONG" },
    { maxScore: 59, minScore: 50, output: "AVERAGE" },
    { maxScore: 49, minScore: 25, output: "WEAK" },
    { maxScore: 24, minScore: 0, output: "VERY_WEAK" },
];

const getScore = (str: string): number => {
    let score = 0;
    const len = str.length;
    let hasNum = false;
    let hasLowLetter = false;
    let hasUpperLetter = false;
    let hasSymbol = false;

    // 一、密码长度:
    if (len <= 4) {
        score += 5;
    } else if (len >= 5 && len <= 7) {
        score += 10;
    } else {
        score += 25;
    }

    // 二、字母:
    if (/[a-z]/.test(str)) {
        hasLowLetter = true;
        score += 10;
    }
    if (/[A-Z]/.test(str)) {
        hasUpperLetter = true;
        score += 10;
    }

    // 三、数字:
    const numCount = len - str.replace(/[0-9]/g, "").length;
    if (numCount === 1) {
        hasNum = true;
        score += 10;
    } else if (numCount > 1) {
        hasNum = true;
        score += 20;
    }

    // 四、符号:
    const symbolCount = len - str.replace(/[!"#$%&'()*+,-./:;<=>?@[\]^_`{|}~]/g, '').length;
    if (symbolCount === 1) {
        hasSymbol = true;
        score += 10;
    } else if (symbolCount > 1) {
        hasSymbol = true;
        score += 25;
    }

    // 五、奖励（只能选符合最多的那一种奖励)
    if (hasLowLetter && hasUpperLetter && hasNum && hasSymbol) {
        score += 5;
    } else if ((hasLowLetter || hasUpperLetter) && hasNum && hasSymbol) {
        score += 3;
    } else if ((hasLowLetter || hasUpperLetter) && hasNum && !hasSymbol) {
        score += 2;
    }

    return score;
};

rl.on("line", function (line) {
    const score = getScore(line);
    const output = ScoreList.find((item) => score >= item.minScore && score <= item.maxScore).output;
    console.log(output);
});