public void FlattenTest()
{
var solution = new _114_FlattenBinaryTreeToLinkedList();
var root = TestHelper.GenerateTree(new int?[] { 1, 2, 5, 3, 4, null, 6 });
solution.Flatten(root);
AssertHelper.AssertTree(new int?[] { 1, null, 2, null, 3, null, 4, null, 5, null, 6 }, root);
}
public void FlattenTest_Null()
{
var solution = new _114_FlattenBinaryTreeToLinkedList();
solution.Flatten(null);
}