20.cs

/* LINQ Puzzle #20 *******************************************************

Summary: Given a list integers, generate every combination of integers.

Sample: { 1, 2, 3, 4 } => {
	{1},
	{2},
	{3},
	{4},
	{1,2},
	{1,3},
	{1,4},
	{2,3},
	{2,4},
	{3,4},
	{1,2,3},
	{1,2,4},
	{1,3,4},
	{2,3,4},
	{1,2,3,4},
}
************************************************************************/

var ints = new [] { 1, 2, 3, 4 };