
671

Second Minimum Node In a Binary Tree

42.9%

Easy


669

Trim a Binary Search Tree

59.2%

Easy


666

Path Sum IV

49.4%

Medium


663

Equal Tree Partition

36.9%

Medium


662

Maximum Width of Binary Tree

37.2%

Medium


655

Print Binary Tree

50.7%

Medium


654

Maximum Binary Tree

70.4%

Medium


653

Two Sum IV  Input is a BST

50.6%

Easy


652

Find Duplicate Subtrees

33.7%

Medium


637

Average of Levels in Binary Tree

55.9%

Easy


623

Add One Row to Tree

46.8%

Medium


617

Merge Two Binary Trees

68.1%

Easy


606

Construct String from Binary Tree

49.8%

Easy


582

Kill Process

49.3%

Medium


572

Subtree of Another Tree

40.7%

Easy


563

Binary Tree Tilt

46.9%

Easy


549

Binary Tree Longest Consecutive Sequence II

40.8%

Medium


545

Boundary of Binary Tree

31.5%

Medium


543

Diameter of Binary Tree

44.0%

Easy


538

Convert BST to Greater Tree

49.6%

Easy


536

Construct Binary Tree from String

40.9%

Medium


515

Find Largest Value in Each Tree Row

54.9%

Medium


513

Find Bottom Left Tree Value

56.0%

Medium


508

Most Frequent Subtree Sum

52.5%

Medium


501

Find Mode in Binary Search Tree

37.8%

Easy


450

Delete Node in a BST

36.9%

Medium


449

Serialize and Deserialize BST

42.4%

Medium


437

Path Sum III

39.8%

Easy


404

Sum of Left Leaves

47.0%

Easy


366

Find Leaves of Binary Tree

59.9%

Medium


337

House Robber III

43.7%

Medium


333

Largest BST Subtree

30.7%

Medium


298

Binary Tree Longest Consecutive Sequence

41.1%

Medium


297

Serialize and Deserialize Binary Tree

33.6%

Hard


285

Inorder Successor in BST

36.1%

Medium


272

Closest Binary Search Tree Value II

39.1%

Hard


270

Closest Binary Search Tree Value

39.6%

Easy


257

Binary Tree Paths

38.9%

Easy


255

Verify Preorder Sequence in Binary Search Tree

40.3%

Medium


250

Count Univalue Subtrees

42.3%

Medium


236

Lowest Common Ancestor of a Binary Tree

29.9%

Medium


235

Lowest Common Ancestor of a Binary Search Tree

39.2%

Easy


230

Kth Smallest Element in a BST

44.0%

Medium


226

Invert Binary Tree

52.1%

Easy


222

Count Complete Tree Nodes

27.5%

Medium


199

Binary Tree Right Side View

41.2%

Medium


173

Binary Search Tree Iterator

41.7%

Medium


156

Binary Tree Upside Down

44.7%

Medium


145

Binary Tree Postorder Traversal

40.5%

Hard


144

Binary Tree Preorder Traversal

45.3%

Medium


129

Sum Root to Leaf Numbers

36.9%

Medium


124

Binary Tree Maximum Path Sum

26.3%

Hard


117

Populating Next Right Pointers in Each Node II

33.8%

Medium


116

Populating Next Right Pointers in Each Node

36.9%

Medium


114

Flatten Binary Tree to Linked List

35.3%

Medium


113

Path Sum II

34.0%

Medium


112

Path Sum

34.1%

Easy


111

Minimum Depth of Binary Tree

33.2%

Easy


110

Balanced Binary Tree

37.6%

Easy


108

Convert Sorted Array to Binary Search Tree

42.4%

Easy


107

Binary Tree Level Order Traversal II

40.5%

Easy


106

Construct Binary Tree from Inorder and Postorder Traversal

32.3%

Medium


105

Construct Binary Tree from Preorder and Inorder Traversal

32.5%

Medium


104

Maximum Depth of Binary Tree

52.9%

Easy


103

Binary Tree Zigzag Level Order Traversal

34.9%

Medium


102

Binary Tree Level Order Traversal

40.2%

Medium


101

Symmetric Tree

39.0%

Easy


100

Same Tree

46.6%

Easy


99

Recover Binary Search Tree

30.0%

Hard


98

Validate Binary Search Tree

23.5%

Medium


96

Unique Binary Search Trees

41.2%

Medium


95

Unique Binary Search Trees II

31.6%

Medium


94

Binary Tree Inorder Traversal

47.1%

Medium
