using System;
using System.Linq;
class Program
{
static void Main() {
int[] array = { 1, 1, 2, 2, 3, 3, 3, 4, 5, 5, 6, 7, 7, 8, 8, 8, 8 };
var result = array.Distinct();
Console.WriteLine(string.Join(", ", result));
}
}
/*
run:
1, 2, 3, 4, 5, 6, 7, 8
*/