public void KthSmallest_1()
{
var root = TestHelper.GenerateTree(new int?[] { 3, 1, 4, null, 2 });
var solution = new _0230_KthSmallestElementInABST();
var result = solution.KthSmallest(root, 1);
Assert.AreEqual(1, result);
}
public void KthSmallest_2()
{
var root = TestHelper.GenerateTree(new int?[] { 5, 3, 6, 2, 4, null, null, 1 });
var solution = new _0230_KthSmallestElementInABST();
var result = solution.KthSmallest(root, 3);
Assert.AreEqual(3, result);
}