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Solution: Delete Nodes And Return Forest

Explore how to delete nodes from a binary tree and return the resulting forest of disjoint trees by applying depth-first search. This lesson guides you through identifying nodes to delete, detaching subtrees, and managing roots efficiently, preparing you to handle similar tree manipulation problems.

Statement

Given the root of a binary tree where each node has a unique value, your task is to delete all nodes with values specified in the deleteNodes array. After performing the deletions, the tree will split into a forest—a collection of disjoint trees. Return the roots of the remaining trees in the forest in any order.

Constraints:

  • 00\leq nodes 100\leq100 ...