public void IsPermuted2(string str1, string str2, bool expected)
        {
            var solution = new CheckPermutations();

            var actual = solution.IsPermuted2(str1, str2);

            Assert.Equal(expected, actual);
        }
        public void TestCheckPermutations()
        {
            // sort strings and check if permutation
            Assert.True(CheckPermutations.PermutationsSortString("god", "dog"));
            Assert.False(CheckPermutations.PermutationsSortString("abc", "cbd"));

            Assert.True(CheckPermutations.Permutations("god", "dog"));
            Assert.False(CheckPermutations.Permutations("abc", "cbd"));
        }