Md5 hash, C# - rextester

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//Title of this code
//Rextester.Program.Main is the entry point for your code. Don't change it.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

using System.Text;
using System.Security.Cryptography;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            //Your code goes here
            Console.WriteLine(CalculateMD5Hash("Hello, world!"));
        }
        
        public static string CalculateMD5Hash(string input)
        {
            var md5 = MD5.Create();
            byte[] inputBytes = Encoding.Unicode.GetBytes(input);
            byte[] hash = md5.ComputeHash(inputBytes);
         
            // step 2, convert byte array to hex string
            StringBuilder sb = new StringBuilder();
            for (int i = 0; i < hash.Length; i++)
            {
                sb.Append(hash[i].ToString("X2"));
            }
            return sb.ToString();
        }
    }
}

Show compiler warnings [ + ] Show input
Compilation time: 0.31 sec, absolute running time: 0.12 sec, cpu time: 0.11 sec, average memory usage: 19 Mb, average nr of threads: 3