题解 | #密码强度等级#，还是考验细心

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNext()) { // 注意 while 处理多个 case
            String key = in.next();
            int count = 0;
            int length = key.length();
            if (length <= 4)
                count += 5;
            else if (length <= 7)
                count += 10;
            else
                count += 25;
            char[] chars = key.toCharArray();
            int letter = getAZ(chars);
            int number = getNumber(chars);
            int symbol = getSymbol(chars);
            int reward = getReward(letter, number, symbol);
            count += letter + number + symbol + reward;
            String result = getResult(count);
            System.out.println(result);
        }
    }

    private static String getResult(int count) {
        if (count >= 90) {
            return "VERY_SECURE";
        }
        if (count >= 80) {
            return "SECURE";
        }
        if (count >= 70) {
            return "VERY_STRONG";
        }
        if (count >= 60) {
            return "STRONG";
        }
        if (count >= 50) {
            return "AVERAGE";
        }
        if (count >= 25) {
            return "WEAK";
        }
        return "VERY_WEAK";

    }

    private static int getReward(int letter, int number, int symbol) {
        if (letter == 20 && number >= 10 && symbol >= 10) {
            return 5;
        }
        if (letter >= 10 && number >= 10 && symbol >= 10) {
            return 3;
        }
        if (letter >= 10 && number >= 10) {
            return 2;
        }
        return 0;
    }

    public static int getAZ(char[] chars) {
        boolean[] b = new boolean[2];
        for (int i = 0; i < chars.length; i++) {
            if (Character.isLowerCase(chars[i])) {
                b[0] = true;
                continue;
            }
            if (Character.isUpperCase(chars[i])) {
                b[1] = true;
            }
        }
        if (b[0] && b[1]) {
            return 20;
        }
        if (b[0] || b[1]) {
            return 10;
        }
        return 0;
    }

    public static int getNumber(char[] chars) {
        boolean b = false;
        int count = 0;
        for (int i = 0; i < chars.length; i++) {
            if (Character.isDigit(chars[i])) {
                b = true;
                count++;
            }
        }
        if (b && count > 1) {
            return 20;
        }
        if (count == 1) {
            return 10;
        }
        return 0;
    }

    public static int getSymbol(char[] chars) {
        int count = 0;
        for (int i = 0; i < chars.length; i++) {
            char c = chars[i];
            if (!Character.isLetterOrDigit(c)) {
                count++;
            }
        }
        if (count > 1) {
            return 25;
        }
        if (count == 1) {
            return 10;
        }
        return 0;
    }
}