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Learn Data Structures and Algorithms in JavaScript

Problem: Vertical Order Traversal of a Binary Tree

Explore how to perform vertical order traversal of a binary tree by using breadth-first search while tracking row and column positions. Learn to group nodes by column and sort them by row and value to obtain the correct vertical order output. This lesson equips you with practical skills to handle tree data structures and apply sorting techniques for structured traversal.

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Statement

Given the root of a binary tree, compute the vertical order traversal of the tree.

Each node is assigned a position (row,col)(row, col). The root is located at position (0,0)(0, 0). For any node at position (row,col)(row, col), its left child is at position (row+1,col−1)(row + 1, col - 1) and its right child is at position (row+1,col+1)(row + 1, col + 1) ...