题解 | #密码强度等级#

function solution(str){
    let score = 0;
    
    // 密码长度   
    if(str.lenght <= 4){
        score += 5
    }else if(str.length <= 7){
        score += 10
    }else {
        score += 25
    }
    let lowerCaseCharNum = 0; //英文小写字母
    let upperCaseCharNum = 0; //英文大写字母
    let numberNum = 0; //数字个数
    let otherNum = 0; //符号
    
    // 每种字符可能的长度
    for(let i=0; i<str.length; i++){
        let char = str.charAt(i)  
        if(/[a-z]/.test(char)){
            lowerCaseCharNum++;
        }else if(/[A-Z]/.test(char)){
            upperCaseCharNum++
        }else if(/[1-9]/.test(char)){
            numberNum++;
        }else if(isOtherChar(char)){
            otherNum++;
        }
    }
    
    // 字母
    if(!lowerCaseCharNum && !upperCaseCharNum){
        score += 0
    }else if(lowerCaseCharNum && upperCaseCharNum){
        score += 20
    }else{
        score += 10
    }
    
    // 数字
    if(numberNum === 1){
        score += 10
    }else if(numberNum > 1){
        score += 20
    }
    
    // 符号
    if(otherNum === 1){
        score += 10
    }else if(otherNum > 1){
        score += 25
    }
    
    // 奖励
    if(lowerCaseCharNum && upperCaseCharNum && numberNum && otherNum){
        score += 5
    }else if((lowerCaseCharNum || upperCaseCharNum) && numberNum && otherNum){
        score += 3
    }else if((lowerCaseCharNum || upperCaseCharNum) && numberNum){
        score += 2
    }
    
    if(score>=90){
        return 'VERY_SECURE'
    }else if(score>=80){
        return 'SECURE'
    }else if(score>=70){
        return 'VERY_STRONG'
    }else if(score>=60){
        return 'STRONG'
    }else if(score>=50){
        return 'AVERAGE'
    }else if(score>=25){
        return 'WEAK'
    }
    return 'VERY_WEAK'
}

// 判断是否是其他字符
function isOtherChar(char){
    let num = parseInt(char.charCodeAt(0))
    if(num >= 0x21 && num <= 0x2F){
        return true
    }else if(num >= 0x3A && num <= 0x40){
        return true
    }else if(num >= 0x5B && num <= 0x60){
        return true
    }else if(num >= 0x7B && num <= 0x7E){
        return true
    }
    return false
}

let line
while(line=readline()){
    console.log(solution(line))
}