public void Example4()
{
Assert.AreEqual(new List <string> {
"aabb", "abab", "abba", "baab", "baba", "bbaa"
},
Permutations.SinglePermutations2("aabb").OrderBy(x => x).ToList());
}
public void Example1()
{
Assert.AreEqual(new List <string> {
"a"
}, Permutations.SinglePermutations("a").OrderBy(x => x).ToList());
}