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  2. Algorithms
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Strong Password

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920 Discussions

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  • alexander_laptin
     + 0 comments
    public static int minimumNumber(int n, string password)
{
// Return the minimum number of characters to make the password strong
    List<char> distinctChars = password.Distinct().ToList<char>();

    int charsToBeAdded = 0;

    if(!distinctChars.Exists(x => Char.IsAsciiDigit(x) == true))
    {
        charsToBeAdded++;
    }

    if(!distinctChars.Exists(x => Char.IsAsciiLetterLower(x) == true))
    {
        charsToBeAdded++;
    }

    if(!distinctChars.Exists(x => Char.IsAsciiLetterUpper(x) == true))
    {
        charsToBeAdded++;
    }

    if(!distinctChars.Exists(x => Char.IsAsciiLetterOrDigit(x) == false && Char.IsWhiteSpace(x) == false))
    {
        charsToBeAdded++;
    }

    const int minPasswordLength = 6;

    if(password.Length > minPasswordLength)
    {
        return charsToBeAdded;
    }
    else
    {
        int difference = minPasswordLength - password.Length;

        if(difference > charsToBeAdded)
        {
            return difference;
        }
        else
        {
            return charsToBeAdded;
        }
    }

}

  • edgar_meendozq
     + 0 comments
    def minimumNumber(n, password):
    # Return the minimum number of characters to make the password strong
    special_characters = "!@#$%^&*()-+"

    d = lower = upper = sc = 0
    for ch in password:
        if ch.isdigit() and d == 0:
            d = 1
        elif ch.islower() and lower == 0:
            lower = 1
        elif ch.isupper() and upper == 0:
            upper = 1
        elif ch in special_characters and sc == 0:
            sc = 1

    total = d + lower + upper + sc

    return max(6-n, 4-total)

  • Verminski
     + 0 comments

    c++

    int minimumNumber(int n, string password) {
    // Return the minimum number of characters to make the password strong
    bool UP =0, down =0, digit =0, special =0;
    unsigned int result1 =4, res2 =0; 
    
    for (int i=0;i<n;i++) {
        if (password.at(i) <= 'z' and password.at(i) >= 'a') {
            down = 1;
        }
        if (password.at(i) <= '9' and password.at(i) >= '0') {
            digit = 1;
        }
        if (password.at(i) <= 'Z' and password.at(i) >= 'A') {
            UP = 1;
        }
        if ((password.at(i) <= '+' and
            password.at(i) >= '!')or(password.at(i)=='^')or(password.at(i)=='-')
            or (password.at(i)=='@')){
            special = 1;
        }
    }
    res2 = UP+down+digit+special;
    if (n>=6) {
    result1 -= res2;
    }
    if(n == 5 and res2 ==0) {
        result1 = res2+1;
    }
    if(n == 5 and res2 >=1) {
        result1 = result1 - res2;
    }
    if(n == 5 and res2 == 4) {
        result1 = 6-n;
    }
    if (n==4) {
        result1 = res2+2;
    }
    if (n==4 and res2 >=2) {
        result1 = res2;         
    }
    if (n==4 and res2 >=3) {
        result1 = 6-n;
    }
    if (n<=3) {
        result1 = 6-n;
    }
    return result1;
}

  • robertbielicki
     + 0 comments
    def minimumNumber(n, password):
    digits, lower_case, upper_case, special_ch = 0, 0 ,0, 0

    for sign in password:
        if sign.isnumeric():
            digits = 1
        elif sign.islower():
            lower_case = 1
        elif sign.isupper():
            upper_case = 1
        elif sign in "!@#$%^&*()-+":
            special_ch = 1
    result = [digits, lower_case, upper_case, special_ch]
    missing = 4 - sum(result)
    password_length = len(password)

    if password_length >= 6:
        if all(result):
            return 0
        return missing
    else:
        if password_length + missing >= 6:
            return missing
        return 6 - (password_length + missing) + missing

  • robertbielicki
     + 0 comments
        digits, lower_case, upper_case, special_ch = 0, 0 ,0, 0

    for sign in password:
        if sign.isnumeric():
            digits = 1
        elif sign.islower():
            lower_case = 1
        elif sign.isupper():
            upper_case = 1
        elif sign in "!@#$%^&*()-+":
            special_ch = 1
    result = [digits, lower_case, upper_case, special_ch]
    missing = 4 - sum(result)
    password_length = len(password)

    if password_length >= 6:
        if all(result):
            return 0
        return missing
    else:
        if password_length + missing >= 6:
            return missing
        return 6 - (password_length + missing) + missing