using System;
using System.Linq;

public class Test
{
	public static void Main()
	{
		var np = new [] {1, 2, 4, 7, 0};
		var res = np.Zip(np.Skip(1), (a,b)=>b-a).ToArray();
		foreach (var n in res) {
			Console.WriteLine(n);
		}
	}
}