Move all negative elements to the end of the array

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

namespace OneCompiler
{
	public class Program
	{
		public static void Main(string[] args)
		{
			int n = int.Parse(Console.ReadLine());
			
			int[] arr = Array.ConvertAll(Console.ReadLine().Split(" "), new Converter<string,int>(StringToInteger));
			
			SegregateNegativeElements(arr);
			
			for (int i = 0; i < n; i++)
			{
			  Console.Write(arr[i] + " ");
			}
		}
		
		private static int StringToInteger(string s)
		{
		  return int.Parse(s);
		}
		
		private static void SegregateNegativeElements(int[] arr)
		{
		  int n = arr.Length;
		  
		  if (n == 0 || n == 1)
		  {
		    return;
		  }
		  
		  int[] tempArr = new int[n];
		  
		  int k = 0;
		  
		  for (int i = 0; i < n; i++)
		  {
		    if (arr[i] >= 0)
		    {
		      tempArr[k] = arr[i];
		      k++;
		    }
		  }
		  
		  for (int i = 0; i < n; i++)
		  {
		    if (arr[i] < 0)
		    {
		      tempArr[k] = arr[i];
		      k++;
		    }
		  }
		  
		  for (int i = 0; i < n; i++)
		  {
		    arr[i] = tempArr[i];
		  }
		}
	}
}