题解 | #密码强度等级#

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

int main(){
    string str;
    int score = 0;
    int num_len = 0;//数字长度
    int sign_len = 0;//符号长度
    int big_len = 0;//大写字母的数量
    int small_len = 0;//小写字母的数量
    int max_reward = 0;//最大奖励
    int reward1 = 0;
    int reward2 = 0;
    int reward3 = 0;

    while(cin >> str){
        int str_len = str.size();
       
        for(int i = 0; i < str_len; i++)
        {
            if(str[i] >= '0' && str[i] <= '9'){
                num_len++;
            }
            else if(str[i] >= 'A' && str[i] <= 'Z'){
                big_len++;
            }
            else if(str[i] >= 'a' && str[i] <= 'z'){
                small_len++;
            }
            else if((str[i] >=0x21 && str[i] <= 0x2F)||(str[i] >=0x3A && str[i] <= 0x40)||
                    (str[i] >=0x5B && str[i] <= 0x60)||(str[i] >=0x7B && str[i] <= 0x7E))
            {
                sign_len++;
            }
        }
        
        //密码长度
        if(str_len <= 4){
            score = 5;
        }
        else if(str_len >= 5 && str_len <= 7){
            score = 10;
        }
        else{
            score = 25;
        }
        
        //字母
        if((big_len != 0 && small_len == 0)||(big_len == 0 && small_len != 0)){
            score = score + 10;
        }
        else if((big_len != 0) && (small_len != 0)){
            score = score + 20;
        }
        
        //数字
        if(num_len == 1){
            score = score + 10;
        }
        else if(num_len > 1){
            score = score + 20;
        }
        
        //符号
        if(sign_len == 1){
            score = score + 10;
        }
        else if(sign_len > 1){
            score = score + 25;
        }
        
        //奖励
        if(((big_len != 0) || (small_len != 0)) && num_len != 0){
            reward1 = 2;
        }
        if(((big_len != 0) || (small_len != 0)) && (num_len != 0) && sign_len != 0){
            reward2 = 3;
        }
        if(((big_len != 0) && (small_len != 0)) && (num_len != 0) && sign_len != 0){
            reward3 = 5;
        }
        
        if(reward3 != 0)
        {
            max_reward = reward3;
        }
        else{
            max_reward = max(reward1,reward2);
        }
        
        score += max_reward;
        
        if(score >= 90){
            cout<<"VERY_SECURE"<<endl;
        }
        if(score >= 80 && score < 90){
            cout<<"SECURE"<<endl;
        }
        if(score >= 70 && score < 80){
            cout<<"VERY_STRONG"<<endl;
        }
        if(score >= 60 && score < 70){
            cout<<"STRONG"<<endl;
        }
        if(score >= 50 && score < 60){
            cout<<"AVERAGE"<<endl;
        }
        if(score >= 25 && score < 50){
            cout<<"WEAK"<<endl;
        }
        if(score >= 0 && score < 25){
            cout<<"VERY_WEAK"<<endl;
        }
        
    }
    
    return 0;
}