Sort List of Ages Using A Stack, C#

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/******************************************************************************************

PROBLEM: Sort An Array of Integers

******************************************************************************************/

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

namespace Rextester
{
    public class Program
    {
        public static int[] list;
        
        public static void Main(string[] args)
        {
           //Load the list of integers
           list = new int[]{11, 2, 5, 6 , 10, 18, 13, 500, 1, 9, 91, 11, 500};
            
           int[] stackArray = new int[list.Count()];
           int stackTop = -1; 
            
           foreach(int number in list)
           {
               if(stackTop == -1)
               {
                   stackTop++;
                   stackArray[stackTop]=number;
               }
               else
               {
                   bool found = false;
                   int targetIndex = -1;
                   for(int s=0; s<stackTop+1 && !found; s++)
                   {
                       if(number <= stackArray[s])
                       {
                          targetIndex = s;
                          found = true;                          
                       }
                     
                   }
                 
                   if(found)
                   {
                       //move all elements down
                       for(int t=stackTop; t>=targetIndex; t--)
                       {
                           stackArray[t+1] = stackArray[t];
                       }
                       //insert
                       stackTop++;
                       stackArray[targetIndex]=number;
                   }
                   else
                   {
                       //just insert
                       stackTop++;
                       stackArray[stackTop]=number;
                   }
                   
               }
           }
            
           for(int z=0; z <= stackTop; z++)
           {
               Console.WriteLine(stackArray[z]);
           }
         
            
            
            
        }
    }
}

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Compilation time: 0,16 sec, absolute running time: 0,09 sec, cpu time: 0,08 sec, average memory usage: 10 Mb, average nr of threads: 2