
450

Delete Node in a BST

34.7%

Medium


449

Serialize and Deserialize BST

42.3%

Medium


437

Path Sum III

38.7%

Easy


404

Sum of Left Leaves

45.7%

Easy


366

Find Leaves of Binary Tree

57.1%

Medium


337

House Robber III

41.6%

Medium


333

Largest BST Subtree

29.9%

Medium


298

Binary Tree Longest Consecutive Sequence

40.0%

Medium


297

Serialize and Deserialize Binary Tree

31.7%

Hard


285

Inorder Successor in BST

36.1%

Medium


272

Closest Binary Search Tree Value II

37.7%

Hard


270

Closest Binary Search Tree Value

38.2%

Easy


257

Binary Tree Paths

34.9%

Easy


255

Verify Preorder Sequence in Binary Search Tree

38.9%

Medium


250

Count Univalue Subtrees

40.4%

Medium


236

Lowest Common Ancestor of a Binary Tree

29.3%

Medium


235

Lowest Common Ancestor of a Binary Search Tree

38.1%

Easy


230

Kth Smallest Element in a BST

42.1%

Medium


226

Invert Binary Tree

49.9%

Easy


222

Count Complete Tree Nodes

26.9%

Medium


199

Binary Tree Right Side View

38.7%

Medium


173

Binary Search Tree Iterator

39.1%

Medium


156

Binary Tree Upside Down

42.8%

Medium


145

Binary Tree Postorder Traversal

38.4%

Hard


144

Binary Tree Preorder Traversal

43.1%

Medium


129

Sum Root to Leaf Numbers

35.2%

Medium


124

Binary Tree Maximum Path Sum

25.1%

Hard


117

Populating Next Right Pointers in Each Node II

33.5%

Hard


116

Populating Next Right Pointers in Each Node

36.9%

Medium


114

Flatten Binary Tree to Linked List

33.6%

Medium


113

Path Sum II

31.5%

Medium


112

Path Sum

33.0%

Easy


111

Minimum Depth of Binary Tree

32.3%

Easy


110

Balanced Binary Tree

36.2%

Easy


108

Convert Sorted Array to Binary Search Tree

40.4%

Medium


107

Binary Tree Level Order Traversal II

37.9%

Easy


106

Construct Binary Tree from Inorder and Postorder Traversal

31.0%

Medium


105

Construct Binary Tree from Preorder and Inorder Traversal

30.8%

Medium


104

Maximum Depth of Binary Tree

50.9%

Easy


103

Binary Tree Zigzag Level Order Traversal

32.3%

Medium


102

Binary Tree Level Order Traversal

37.1%

Easy


101

Symmetric Tree

37.0%

Easy


100

Same Tree

45.3%

Easy


99

Recover Binary Search Tree

28.7%

Hard


98

Validate Binary Search Tree

22.4%

Medium


96

Unique Binary Search Trees

39.8%

Medium


95

Unique Binary Search Trees II

30.6%

Medium


94

Binary Tree Inorder Traversal

43.9%

Medium
