numCount.cs

using System.Collections.Generic;
using System;
					
public class Program
{
	public static void Main()
	{
		int[] nums = new int[] {1,1,1,2,2,3};
		
		Dictionary<string,int> numCount = new Dictionary<string,int>();
		
		foreach(int num in nums)
		{
		    string numKey = num.ToString();
		    if(numCount.ContainsKey(numKey))
			{
			    numCount[numKey] += 1; 
			}
			else
			{
		            numCount.Add(numKey,1);
			}
		}
		
		foreach(KeyValuePair<string,int> pair in numCount)
		{
		    Console.WriteLine("{0}, {1}", pair.Key, pair.Value);
		}
	}
}