using System;
public class Program
{
/// {1,1,1,2,5,5,10}
// prints 1: 3, 2: 1, 5: 2, 10: 1
static void FrequencyCount(int[] arr){
throw new NotImplementedException();
}
public static void Main()
int[] frequencyArray = new int[]{1,1,1,2,5,5,10};
FrequencyCount(frequencyArray);