public Comparer(IEnumerable <string> itemsA, IEnumerable <string> itemsB)
{
var HashA = new HashSet <String>(itemsA);
var HashB = new HashSet <String>(itemsB);
foreach (var item in HashB)
{
if (HashA.Contains(item))
{
BothAandB.Add(item);
}
else
{
OnlyB.Add(item);
}
}
foreach (var item in HashA)
{
if (!HashB.Contains(item))
{
OnlyA.Add(item);
}
}
OnlyAorB.AddRange(OnlyA);
OnlyAorB.AddRange(OnlyB);
OnlyA.Sort();
OnlyB.Sort();
OnlyAorB.Sort();
BothAandB.Sort();
}
public void TryVenn()
{
var list1 = new[] { 4, 5, 6, 7, 1, 2, 3 };
var list2 = new[] { 8, 9, 10, 6, 7 };
var(OnlyA, AandB, OnlyB) = list1.Venn(list2);
var AtAOnly = Enumerable.Range(1, 5);
var AtAB = Enumerable.Range(6, 2);
var AtBOnly = Enumerable.Range(8, 3);
Assert.IsTrue(OnlyA.ContentEquals(AtAOnly));
Assert.IsTrue(AandB.ContentEquals(AtAB));
Assert.IsTrue(OnlyB.ContentEquals(AtBOnly));
}