题解 | 密码强度检查

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int T = in.nextInt();
        in.nextLine();
        for (int i = 0 ; i < T ; i++) {
            String strength = strength(in.nextLine());
            System.out.println(strength);
        }
    }

    public static String strength(String password) {
        if (password.isEmpty()) {
            return  "Password cannot be empty";
        }
        if (password.length() < 8) {
            return "Weak";
        }
        int count = 0;
        if (password.matches(".*\\d.*"))
            count ++;
        if (password.matches(".*[a-z].*"))
            count ++;
        if (password.matches(".*[A-Z].*"))
            count ++;
        int tCount = 0;
        for (int i = 0 ; i < password.length() ; i++) {
            if (password.charAt(i) >= 33 && password.charAt(i) <= 47
                    || password.charAt(i) >= 58 && password.charAt(i) <= 64
                    || password.charAt(i) >= 91 && password.charAt(i) <= 96
                    || password.charAt(i) >= 123 && password.charAt(i) <= 126) {
                tCount ++;
            }
        }
        if (tCount > 0) {
            count ++;
        }
        if (count == 3 )
            return "Medium";
        if (count == 4 )
            return "Strong";

        return "Weak";
    }
}