题解 | #密码强度等级#

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.nextLine();

        int sum = getLengthScore(s) + getLetterScore(s) + getNumberScore(
                      s) + getSignScore(s) + getRewardScore(s);
        if (sum >= 90) System.out.println("VERY_SECURE");
        else if (sum >= 80) System.out.println("SECURE");
        else if (sum >= 70) System.out.println("VERY_STRONG");
        else if (sum >= 60) System.out.println("STRONG");
        else if (sum >= 50) System.out.println("AVERAGE");
        else if (sum >= 25) System.out.println("WEAK");
        else System.out.println("VERY_WEAK");
    }

    private static int getRewardScore(String s) {
        if (getNumberScore(s) > 0 && getSignScore(s) > 0 &&
                getLetterScore(s) == 20) return 5;
        if (getNumberScore(s) > 0 && getSignScore(s) > 0 &&
                getLetterScore(s) == 10) return 3;
        if (getLetterScore(s) > 0 && getNumberScore(s) > 0) return 2;
        return 0;
    }

    private static int getSignScore(String s) {
        int count = 0;
        for (int i = 0; i < s.length(); i++) {
            char c = s.charAt(i);
            if ((c >= 0x21 && c <= 0x2F) || (c >= 0x3A && c <= 0x40) || (c >= 0x5B &&
                    c <= 0x60) || (c >= 0x7B && c <= 0x7E))
                count++;
        }
        if (count > 1) return 25;
        if (count == 1) return 10;
        return 0;
    }

    private static int getNumberScore(String s) {
        int count = 0;
        for (int i = 0; i < s.length(); i++) {
            char c = s.charAt(i);
            if (c <= '9' && c >= '0') count++;
        }
        if (count > 1) return 20;
        if (count == 1) return 10;
        return 0;
    }

    private static int getLetterScore(String s) {
        boolean haveLower = false;
        boolean haveUpper = false;
        for (int i = 0; i < s.length(); i++) {
            char c = s.charAt(i);
            if (c <= 'z' && c >= 'a') haveLower = true;
            if (c <= 'Z' && c >= 'A') haveUpper = true;
        }
        if (haveUpper && haveLower) return 20;
        if (haveUpper || haveLower) return 10;
        return 0;
    }

    private static int getLengthScore(String s) {
        if (s.length() >= 8) return 25;
        if (s.length() >= 5) return 10;
        return 5;
    }
}