题解 | #密码强度等级#

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int sort = 0;
        String password = sc.nextLine();
        char[] ch = password.toCharArray();
        //密码长度
        if (password.length() < 5) {
            sort += 5;
        } else if (password.length() > 7) {
            sort += 25;
        } else {
            sort += 10;
        }
        //字母
        int upnum = 0;
        int lwnum = 0;
        for (int i = 0; i < ch.length; i++) {
            if (Character.isUpperCase(ch[i])) {
                upnum++;
            } else if (Character.isLowerCase(ch[i])) {
                lwnum++;
            }
        }
        if ((upnum == 0 && lwnum != 0) || (lwnum == 0 && upnum != 0)) {
            sort += 10;
        } else if (upnum > 0 && lwnum > 0) {
            sort += 20;
        }
        //数字
        int sx = 0;
        for (int i = 0; i < ch.length; i++) {
            if (Character.toString(ch[i]).matches("[0-9]")) {
                sx++;
            }
        }
        if (sx == 1) {
            sort += 10;
        } else if (sx > 1) {
            sort += 20;
        }
        //符号
        int nums = 0;
        for (int i = 0; i < ch.length; i++) {
            if ((int)ch[i] >= 33 && (int)ch[i] <= 47) {
                nums++;
            } else if ((int)ch[i] >= 58 && (int)ch[i] <= 64) {
                nums++;
            } else if ((int)ch[i] >= 91 && (int)ch[i] <= 96) {
                nums++;
            } else if ((int)ch[i] >= 123 && (int)ch[i] <= 126) {
                nums++;
            }
        }
        if (nums == 1) {
            sort += 10;
        } else if (nums > 1) {
            sort += 25;
        }
        //奖励
        if ((nums == 0 && sx > 0 && upnum > 0) || (nums == 0 && sx > 0 && lwnum > 0)) {
            sort += 2;
        } else if ((nums > 0 && sx > 0 && upnum > 0 && lwnum == 0) || (nums > 0 &&
                   sx > 0 && lwnum > 0 && upnum == 0)) {
            sort += 3;
        } else if (nums > 0 && sx > 0 && upnum > 0 && lwnum > 0) {
            sort += 5;
        }
        //评分
        if (sort >= 90) {
            System.out.print("VERY_SECURE");
        } else if (sort >= 80 && sort < 90) {
            System.out.print("SECURE");
        } else if (sort >= 70 && sort < 80) {
            System.out.print("VERY_STRONG");
        } else if (sort >= 60 && sort < 70) {
            System.out.print("STRONG");
        } else if (sort >= 50 && sort < 60) {
            System.out.print("AVERAGE");
        } else if (sort >= 25 && sort < 50) {
            System.out.print("WEAK");
        } else if (sort >= 0 && sort < 25) {
            System.out.print("VERY_WEAK");
        }
    }
}