Question

How to move the digits of a string with digits and letters to the beginning of the string in C#

Answer 1

using System;
using System.Text.RegularExpressions;

class Program
{
    static void Main()
    {
        string inputString = "d2c54be3a1";
        string output = MoveDigitsToFront(inputString);
        
        Console.WriteLine(output); 
    }

    static string MoveDigitsToFront(string input) {
        // Separate digits and non-digits using regex
        string digits = Regex.Replace(input, @"\D", ""); // Extract digits
        string nonDigits = Regex.Replace(input, @"\d", ""); // Extract non-digits

        // Combine digits and non-digits
        return digits + nonDigits;
    }
}



/*
run:

25431dcbea

*/
 

 

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