count occurances , C#

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//Rextester.Program.Main is the entry point for your code. Don't change it.
//Microsoft (R) Visual C# Compiler version 2.9.0.63208 (958f2354)

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

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            //array = [1,4,2,5,4,2,5,1,6,2,5,3,8,9,6]
            //Write a program to count the occurrence of each distinct item in the array?
            //Builin array functions and LINQ are not allowed.
            
            int[] intputArray = {1,4,2,5,4,2,5,1,6,2,5,3,8,9,6};
            
            Dictionary<int,int> trackCount = new Dictionary<int,int>();
            for(int i=0;i <intputArray.Length;i++)
            {
                if(trackCount.ContainsKey(intputArray[i]))
                {
                    trackCount[intputArray[i]]= trackCount[intputArray[i]]+1;
                }
                else
                {
                    trackCount.Add(intputArray[i],1);
                }
            }
            foreach(var item in trackCount)
            {
                 Console.WriteLine(item.Key + "   "+item.Value);
            }
            
           
            
                    }
    }
}

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Compilation time: 0,7 sec, absolute running time: 0,13 sec, cpu time: 0,09 sec, average memory usage: 13 Mb, average nr of threads: 3, absolute service time: 0,85 sec