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Problem: Build Binary Tree from Preorder and Inorder Traversal

Medium
30 min
Explore how to construct a binary tree by leveraging preorder and inorder traversal arrays. This lesson helps you understand tree traversal principles and implement efficient binary tree reconstruction, essential for solving common coding interview problems.

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:

  • 11 \leq p_order.length, i_order.length 1000\leq1000
  • i_order.length ==== p_order.length
  • 1000-1000 \leq p_order[i], i_order[i] 1000\leq 1000
  • p_order and i_order consist of unique values.
  • Each value of i_order also appears in p_order and vice versa.
Problem
Ask
Submissions

Problem: Build Binary Tree from Preorder and Inorder Traversal

Medium
30 min
Explore how to construct a binary tree by leveraging preorder and inorder traversal arrays. This lesson helps you understand tree traversal principles and implement efficient binary tree reconstruction, essential for solving common coding interview problems.

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:

  • 11 \leq p_order.length, i_order.length 1000\leq1000
  • i_order.length ==== p_order.length
  • 1000-1000 \leq p_order[i], i_order[i] 1000\leq 1000
  • p_order and i_order consist of unique values.
  • Each value of i_order also appears in p_order and vice versa.