commonElements.cs

/* LINQ Puzzle #18 *******************************************************

Summary: Given a list of lists of integers, find the common integers that appear in every list.

Sample: {
	{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
	{ 0, 2, 4, 6, 8 },
	{ 1, 4, 7, 8 }
} => { 4, 8 }

************************************************************************/

var lists = new [] {
	new [] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
	new [] { 0, 2, 4, 6, 8 },
	new [] { 1, 4, 7, 8 }
};