Validate Gender using Regular Expressions

#include <bits/stdc++.h>

#include <regex>

using namespace std;

string isValidGender(string str)

{

    const regex pattern(

        "(?:m|M|male|Male|f|F|female|Female|FEMALE|MALE|"

        "Not prefer to say)$");

    if (str.empty()) {

        return "false";

    }

    if (regex_match(str, pattern)) {

        return "true";

    }

    else {

        return "false";

    }

}

int main()

{

    string str1 = "m";

    cout << isValidGender(str1) << endl;

    string str2 = "f";

    cout << isValidGender(str2) << endl;

    string str3 = "F";

    cout << isValidGender(str3) << endl;

    string str4 = "M";

    cout << isValidGender(str4) << endl;

    string str5 = "MALE";

    cout << isValidGender(str5) << endl;

    string str6 = "S";

    cout << isValidGender(str6) << endl;

    string str7 = "Not prefer to say";

    cout << isValidGender(str7) << endl;

    return 0;

}

import java.io.*;

import java.util.regex.*;

class GFG {

    public static boolean isValidGender(String str)

    {

        String regex

            = "(?:m|M|male|Male|f|F|female|Female|FEMALE|MALE|Not prefer to say)$";

        Pattern p = Pattern.compile(regex);

        if (str == null) {

            return false;

        }

        Matcher m = p.matcher(str);

        return m.matches();

    }

    public static void main(String args[])

    {

        String str1 = "m";

        System.out.println(isValidGender(str1));

        String str2 = "f";

        System.out.println(isValidGender(str2));

        String str3 = "F";

        System.out.println(isValidGender(str3));

        String str4 = "M";

        System.out.println(isValidGender(str4));

        String str5 = "FEMALE";

        System.out.println(isValidGender(str5));

        String str6 = "S";

        System.out.println(isValidGender(str6));

        String str7 = "Not prefer to say";

        System.out.println(isValidGender(str7));

    }

}

import re

def isValidGender(str):

    regex = "(?:m|M|male|Male|f|F|female|Female|FEMALE|MALE|Not prefer to say)$"

    p = re.compile(regex)

    if (str == None):

        return False

    if(re.search(p, str)):

        return True

    else:

        return False

if __name__ == '__main__':

    str1 = "m"

    print(isValidGender(str1))

    str2 = "f"

    print(isValidGender(str2))

    str3 = "F"

    print(isValidGender(str3))

    str4 = "M"

    print(isValidGender(str4))

    str5 = "FEMALE"

    print(isValidGender(str5))

    str6 = "S"

    print(isValidGender(str6))

    str7 = "Not prefer to say"

    print(isValidGender(str7))

function isValidGender(str) {

    let regex = new RegExp(/(?:m|M|male|Male|f|F|female|Female|FEMALE|MALE|Not prefer to say)$/);

    if (str == null) {

        return "false";

    }

    if (regex.test(str) == true) {

        return "true";

    }

    else {

        return "false";

    }

}

let str1 = "m";

console.log(isValidGender(str1));

let str2 = "f";

console.log(isValidGender(str2));

let str3 = "F";

console.log(isValidGender(str3));

let str4 = "M";

console.log(isValidGender(str4));

let str5 = "FEMALE";

console.log(isValidGender(str5));

let str6 = "S";

console.log(isValidGender(str6));

let str7="Not prefer to say";

console.log(isValidGender(str7));