Group Binary Tree Nodes by Column
Asked at Meta · Coding Questions · Difficulty: Medium · Last asked Jul 19, 2026
Given the root of a binary tree, group the node values by column and return the groups from the leftmost column to the rightmost.
Loading the problem…
More Meta interview questions
- LLM conceptual questions
- Implement a Two-Hidden-Layer MLP with Backpropagation in NumPy
- Dot Product with Run-Length Encoded Vectors
- Count Lakes Wrapped by a Given Island
- Minimum Remove to Make Valid Parentheses
- LLM with Beam Search and Nucleus Sampling (Meta MSL)