Search everything…
⌘K
Sign in
Dashboard
Companies
Problems
Sheets
Bookmarks
Trees Sheet — CompanyHub · CompanyHub
Study sheet
Trees Sheet
The 30 most frequently asked Trees problems across all companies.
Overall progress
0 / 30 · sign in to track
Step 1 · Problems
0/30
Binary Tree Maximum Path Sum
Hard
Serialize and Deserialize Binary Tree
Hard
Lowest Common Ancestor of a Binary Tree
Medium
Binary Tree Zigzag Level Order Traversal
Medium
Diameter of Binary Tree
Easy
Validate Binary Search Tree
Medium
Maximum Depth of Binary Tree
Easy
Flatten Nested List Iterator
Medium
Binary Tree Right Side View
Medium
House Robber III
Medium
All Nodes Distance K in Binary Tree
Medium
Binary Tree Cameras
Hard
Vertical Order Traversal of a Binary Tree
Hard
Binary Tree Level Order Traversal
Medium
Amount of Time for Binary Tree to Be Infected
Medium
Collect Coins in a Tree
Hard
Kth Smallest Element in a BST
Medium
Boundary of Binary Tree
Medium
Symmetric Tree
Easy
Kth Largest Element in a Stream
Easy
Delete Node in a BST
Medium
Unique Binary Search Trees
Medium
Path Sum III
Medium
Path Sum II
Medium
Lowest Common Ancestor of a BST
Medium
Path Sum
Easy
Lowest Common Ancestor of a Binary Tree III
Medium
Invert Binary Tree
Easy
Construct Binary Tree from Preorder and Inorder Traversal
Medium
Convert Sorted Array to Binary Search Tree
Easy