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Problem:Construct Binary Tree from Preorder and Inorder Traversal

Explore how to reconstruct a binary tree from its preorder and inorder traversal arrays. Learn the recursive strategy that identifies root nodes using preorder, divides nodes using inorder sequences, and uses a hashmap for efficient lookups. Understand the time and space complexity involved in this process.

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Statement

You are given two integer arrays, preorder and inorder, representing the preorder traversal and inorder traversal of the same binary tree, respectively. Your task is to reconstruct and return the binary tree from these two traversal sequences.

Note: All values in the tree are unique, and every value present in inorder is also present in preorder.

Constraints:

  • 1≤1 \leq preorder.length ≤3000\leq 3000

  • inorder.length == preorder.length

  • −3000≤-3000 \leq preorder[i], inorder[i] ≤3000\leq 3000 ...