题解 | #密码强度等级#

#include <cctype>
#include <iostream>
#include <stdexcept>
#include <string>
using namespace std;

int lengthPoint(string str){
    int res = 0;
    // 1. 判断长度
    int len = str.length();
    if(len <= 4){
        res = 5;
    }else if(len <= 7){
        res = 10;
    }else{
        res = 25;
    }

    return res;
}

int cntAlphaPoint(string str){
    int cnt = 0;
    int upper = 0;
    int lower = 0;
    int res = 0;
    for(auto it : str){
        if(isalpha(it)){
            cnt ++;
            if(isupper(it)){
                upper++;
            }else{
                lower++;
            }
        }
    }
    if(cnt == 0){
        res = 0;
    }else if(upper == 0 || lower == 0){
        res = 10;
    }else{
        res = 20;
    }
    return res;
}

int cntDigitPoint(string str){
    int cnt = 0;
    int res = 0;
    for(auto it : str){
        if(isdigit(it)){
            cnt ++;
        }
    }
    if(cnt == 0){
        res = 0;
    }else if(cnt == 1){
        res = 10;
    }else{
        res = 20;
    }
    return res;
}

int cntSimbolPoint(string str){
    int cnt = 0;
    int res = 0;
    for(auto it : str){
        if(ispunct(it)){
            cnt ++;
        }
    }
    if(cnt == 0){
        res = 0;
    }else if(cnt == 1){
        res = 10;
    }else{
        res = 25;
    }
    return res;
}

int cntElse(int a, int b, int c, int d){
    int res = 0;
    if(b == 20 && c >= 10 && d >= 10){
        res = 5;
    }else if(b >= 10 && c >= 10 && d >= 10){
        res = 3;
    }else if(b >= 10 && c >= 10){
        res = 2;
    }
    return res;
}
void printPoint(int total){
    if(total >= 90){
        cout << "VERY_SECURE" << endl;
    }else if(total >= 80){
        cout << "SECURE" << endl;
    }else if(total >= 70){
        cout << "VERY_STRONG" << endl;
    }else if(total >= 60){
        cout << "STRONG" << endl;
    }else if(total >= 50){
        cout << "AVERAGE" << endl;
    }else if(total >= 25){
        cout << "WEAK" << endl;
    }else if(total >= 0){
        cout << "VERY_WEAK" << endl;
    }
}
int main() {
    string str;
    while (getline(cin, str)) { // 注意 while 处理多个 case
        int a = 0, b = 0, c = 0, d = 0, e = 0, total = 0; 
        
        a = lengthPoint(str);
        b = cntAlphaPoint(str);
        c = cntDigitPoint(str);
        d = cntSimbolPoint(str);
        e = cntElse(a,b,c,d);
        total = a+b+c+d+e;

        printPoint(total);
    }
}
// 64 位输出请用 printf("%lld")