using System;
using System.Linq;
public class Program
{
public static void Main()
Console.WriteLine("Hello World");
int[] arr = new int[]{1,2,3,1,2,3,5,6,5,5,7,2,7,9,9,9,9,9,9,9};
int[] distinctArr = arr.Distinct().ToArray();
for(int i=0;i< distinctArr.Length;i++) {
int count = arr.Count(x => x == distinctArr[i]);
Console.WriteLine(distinctArr[i] + " -----> " +count);
}