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Grokking the Coding Interview Patterns in C#

Vertical Order Traversal of a Binary Tree

Explore how to find the vertical order traversal of a binary tree by using breadth-first search techniques. Understand how to return node values from top to bottom in each column, handling multiple nodes in the same row and column by ordering them left to right. This lesson helps you build a clear approach to solving this traversal problem using BFS.

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Statement

Find the vertical order traversal of a binary tree when the root of the binary tree is given. In other words, return the values of the nodes from top to bottom in each column, column by column from left to right. If there is more than one node in the same column and row, return the values from left to right.

Constraints:

  • The number of nodes in the tree is in the range [1, 500].
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