题解 | #密码验证合格程序#

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

bool length(string& str) {
    if (str.size() <= 8) {
        cout << "NG" << endl;
        return false;

    }
    return true;;
}

bool substring(string& str) {
    for (int i = 0; i < str.size() - 3; i++) {
        for (int j = i + 1; j < str.size() - 3; j++) {
            if (str.substr(i, 3) == str.substr(j, 3)) {
                cout << "NG" << endl;
                return false;
                break;
            }
        }

    }
    return true;

}

bool code_tppe(string& str) {
    int type[4] = {0};
    for (int i = 0; i < str.size(); i++) {
        if (str[i] >= 65 && str[i] <= 90) { //判断是否为大写字符
            type[0] = 1;
        } else if (str[i] >= 97 && str[i] <= 122) { //判断是否为小写字符
            type[1] = 1;
        } else if (str[i] >= '0' && str[i] <= '9') {
            type[2] = 1;
        } else {
            type[3] = 1;
        }
    }
    int count = 0;
    for (int i = 0; i < 4; i++) {
        count += type[i];
    }
    if (count >= 3) {
        return true;
    } else {
        cout << "NG" << endl;
        return false;
    }
}


int main() {
    string str;
    while (cin >> str) {
        if (!length(str)) {
            continue;
        }

        if (!substring(str)) {
            continue;
        }
        if (!code_tppe(str)) {
            continue;
        }

        cout << "OK" << endl;






    }
    return 0;
}
// 64 位输出请用 printf("%lld")