public void PivotIndex_1()
        {
            var solution = new _0724_FindPivotIndex();
            var result   = solution.PivotIndex(new int[] { 1, 7, 3, 6, 5, 6 });

            Assert.AreEqual(3, result);
        }
        public void PivotIndex_2()
        {
            var solution = new _0724_FindPivotIndex();
            var result   = solution.PivotIndex(new int[] { 1, 2, 3 });

            Assert.AreEqual(-1, result);
        }