About This Pattern
Master the Tree DFS pattern by practicing these problems organized by difficulty.Focus on the Key Signals - these are the indicators that tell you when to use this pattern.
Easy (1)
Same Tree
Check if two binary trees are structurally identical with same values.
Key Signals:
Parallel traversalCompare values and structureBase cases for null
Medium (1)
Lowest Common Ancestor of a Binary Tree
Find the lowest common ancestor of two nodes in a binary tree.
Key Signals:
Post-order traversalLCA problemRecursive search