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Solution: Build Binary Tree from Preorder and Inorder Traversal

Understand how to build a binary tree by leveraging preorder and inorder traversal arrays. This lesson guides you through a recursive approach that uses preorder to identify root nodes and inorder to divide subtrees, optimizing the process with hashing. You will gain the skills to implement this method and analyze its 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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