HJ87 密码强度等级

1. 题目

读题

HJ87 密码强度等级

 

 

考查点

 

2. 解法

思路

 

代码逻辑

 

具体实现

public class HJ087 {
    public static String[] grades = {"VERY_SECURE", "SECURE", "VERY_STRONG", "STRONG", "AVERAGE", "WEAK", "VERY_WEAK"};

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println(getPwdSecurityGrade(sc.nextLine()));
    }

    public static String getPwdSecurityGrade(String pwd) {
        int score = 0;
        int n = pwd.length();
        if (n <= 4) {
            score += 5;
        } else if (n >= 5 && n <= 7) {
            score += 10;
        } else {
            score += 25;
        }

        boolean upperFlag = false;
        boolean lowerFlag = false;
        int numCnt = 0;
        int symbolCnt = 0;

        for (char c : pwd.toCharArray()) {
            if (c >= 'a' && c <= 'z') {
                upperFlag = true;
            } else if (c >= 'A' && c <= 'Z') {
                lowerFlag = true;
            } else if (c >= '0' && c <= '9') {
                numCnt++;
            } else {
                symbolCnt++;
            }
        }

        if (upperFlag && lowerFlag) {
            score += 20;
        } else if (upperFlag || lowerFlag) {
            score += 10;
        }

        if (numCnt == 1) {
            score += 10;
        } else if (numCnt > 1) {
            score += 20;
        }

        if (symbolCnt == 1) {
            score += 10;
        } else if (symbolCnt > 1) {
            score += 25;
        }

        if (upperFlag && lowerFlag && numCnt > 0 && symbolCnt > 0) {
            score += 5;
        } else if ((upperFlag || lowerFlag) && numCnt > 0 && symbolCnt > 0) {
            score += 3;
        } else if ((upperFlag || lowerFlag) && numCnt > 0) {
            score += 2;
        }


        if (score >= 90) {
            return grades[0];
        } else if (score >= 80) {
            return grades[1];
        } else if (score >= 70) {
            return grades[2];
        } else if (score >= 60) {
            return grades[3];
        } else if (score >= 50) {
            return grades[4];
        } else if (score >= 25) {
            return grades[5];
        } else if (score >= 0) {
            return grades[6];
        }
        return "";
    }
}

 

3. 总结