Vis
Code
Tree
Recursion and traversal on binary trees, BSTs and tries.
104.
Maximum Depth of Binary Tree
Easy
100.
Same Tree
Easy
226.
Invert Binary Tree
Easy
124.
Binary Tree Maximum Path Sum
Hard
102.
Binary Tree Level Order Traversal
Medium
297.
Serialize and Deserialize Binary Tree
Hard
572.
Subtree of Another Tree
Easy
105.
Construct Binary Tree from Preorder and Inorder Traversal
Medium
98.
Validate Binary Search Tree
Medium
230.
Kth Smallest Element in a BST
Medium
235.
Lowest Common Ancestor of a Binary Search Tree
Medium
208.
Implement Trie (Prefix Tree)
Medium
110.
Balanced Binary Tree
Easy
543.
Diameter of Binary Tree
Easy
236.
Lowest Common Ancestor of a Binary Tree
Medium
199.
Binary Tree Right Side View
Medium
1448.
Count Good Nodes in Binary Tree
Medium