
543

Diameter of Binary Tree

42.8%

Easy


538

Convert BST to Greater Tree

52.5%

Medium


536

Construct Binary Tree from String

36.3%

Medium


515

Find Largest Value in Each Tree Row

53.2%

Medium


513

Find Bottom Left Tree Value

55.7%

Medium


508

Most Frequent Subtree Sum

51.7%

Medium


501

Find Mode in Binary Search Tree

38.9%

Easy


450

Delete Node in a BST

35.5%

Medium


449

Serialize and Deserialize BST

42.1%

Medium


437

Path Sum III

39.1%

Easy


404

Sum of Left Leaves

46.4%

Easy


366

Find Leaves of Binary Tree

58.2%

Medium


337

House Robber III

42.4%

Medium


333

Largest BST Subtree

30.1%

Medium


298

Binary Tree Longest Consecutive Sequence

40.3%

Medium


297

Serialize and Deserialize Binary Tree

32.4%

Hard


285

Inorder Successor in BST

36.0%

Medium


272

Closest Binary Search Tree Value II

38.2%

Hard


270

Closest Binary Search Tree Value

38.7%

Easy


257

Binary Tree Paths

36.5%

Easy


255

Verify Preorder Sequence in Binary Search Tree

39.4%

Medium


250

Count Univalue Subtrees

41.1%

Medium


236

Lowest Common Ancestor of a Binary Tree

29.6%

Medium


235

Lowest Common Ancestor of a Binary Search Tree

38.4%

Easy


230

Kth Smallest Element in a BST

42.7%

Medium


226

Invert Binary Tree

50.6%

Easy


222

Count Complete Tree Nodes

27.1%

Medium


199

Binary Tree Right Side View

39.6%

Medium


173

Binary Search Tree Iterator

40.0%

Medium


156

Binary Tree Upside Down

43.5%

Medium


145

Binary Tree Postorder Traversal

39.1%

Hard


144

Binary Tree Preorder Traversal

43.8%

Medium


129

Sum Root to Leaf Numbers

35.7%

Medium


124

Binary Tree Maximum Path Sum

25.4%

Hard


117

Populating Next Right Pointers in Each Node II

33.6%

Medium


116

Populating Next Right Pointers in Each Node

36.9%

Medium


114

Flatten Binary Tree to Linked List

34.1%

Medium


113

Path Sum II

32.3%

Medium


112

Path Sum

33.4%

Easy


111

Minimum Depth of Binary Tree

32.6%

Easy


110

Balanced Binary Tree

36.7%

Easy


108

Convert Sorted Array to Binary Search Tree

41.1%

Easy


107

Binary Tree Level Order Traversal II

38.7%

Easy


106

Construct Binary Tree from Inorder and Postorder Traversal

31.4%

Medium


105

Construct Binary Tree from Preorder and Inorder Traversal

31.3%

Medium


104

Maximum Depth of Binary Tree

51.5%

Easy


103

Binary Tree Zigzag Level Order Traversal

33.2%

Medium


102

Binary Tree Level Order Traversal

38.1%

Medium


101

Symmetric Tree

37.7%

Easy


100

Same Tree

45.7%

Easy


99

Recover Binary Search Tree

29.2%

Hard


98

Validate Binary Search Tree

22.7%

Medium


96

Unique Binary Search Trees

40.2%

Medium


95

Unique Binary Search Trees II

30.9%

Medium


94

Binary Tree Inorder Traversal

44.9%

Medium
