password-generator/PassStrength.java at main · arpitcharpe/password-generator · GitHub

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public class PassStrength {
    public String strength(String password) {
        PasswordGenerator pg = new PasswordGenerator();
        int length = password.length();
        boolean upper = false;
        boolean lower = false;
        boolean digit = false;
        boolean symbol = false;

        int score = 0;

        for(int i=0; i<length; i++) {
            char s = password.charAt(i);
            if (pg.UPPER.indexOf(s) >= 0) upper = true;
            if (pg.LOWER.indexOf(s) >= 0) lower = true;
            if (pg.DIGIT.indexOf(s) >= 0) digit = true;
            if (pg.SYMBOL.indexOf(s) >= 0) symbol = true;
        }
            if(length >= 8) score++;
            if(length >= 12) score++;
            if(upper) score++;
            if(lower) score++;
            if(digit) score++;
            if(symbol) score++;

        if(score < 3) {
            return "Weak";
        } else if(score == 3 || score == 4) {
            return "Medium";
        } else  {
            return "Strong";
        }
    }
}