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Grokking the Coding Interview Patterns in Python

Solution: Build Binary Tree from Preorder and Inorder Traversal

Explore how to build a binary tree from preorder and inorder traversal arrays using recursion and hashing techniques. Understand how to identify root nodes and divide subtrees, optimizing time complexity to solve tree construction problems effectively.

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Statement

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

Constraints:

  • 1≤1 \leq p_order.length, i_order.length
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