using System;
class Program
{
static void Main() {
int[] arr = new int [] {4, 6, 1, 0, 9, 2, 3, 8, 5, 7};
Console.WriteLine(String.Join(" ", arr));
Array.Clear(arr, 1, 4);
Console.WriteLine(String.Join(" ", arr));
}
}
/*
run:
4 6 1 0 9 2 3 8 5 7
4 0 0 0 0 2 3 8 5 7
*/