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Solution: Build Binary Tree from Preorder and Inorder Traversal

Explore how to build a binary tree from given preorder and inorder traversal arrays using recursion and hash mapping. This lesson guides you through selecting root nodes, dividing subtrees, and assembling the full tree efficiently while analyzing time and space complexity.

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Statement

Create a binary tree from two integer arrays, pOrder and iOrder, where pOrder represents a preorder traversal of a binary tree, and iOrder represents an inorder traversal of the same tree.

Constraints:

  • 1≤1 \leq pOrder.length, iOrder.length
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