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Data Structures for Coding Interviews in Go

Solution: Find Nodes at k Distance from the Root

Learn to identify all nodes at a specified distance k from the root in a binary tree using depth first search. Understand the recursive traversal approach and analyze its time and space complexity to apply this technique confidently in coding interviews.

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Statement

Given the root node of a binary tree and an integer value k, find all the nodes at a distance of k from the root node.

Constraints:

Let n be the number of nodes in a binary tree.

  • 1≤1 \leq n ≤500\leq 500
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