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Data Structures & Algorithms In Go

Solution Review: Create a Complete Binary Tree

Explore the method to create a complete binary tree by inserting elements level-by-level in Go. Understand how to calculate child nodes recursively and implement the levelOrderBinaryTree function with O(n) time and space complexity.

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Solution

To create a complete binary tree, we fill the elements in the tree level-by-level, starting from level 0. The steps to create a complete binary tree are as follows:

  • Insert the first element present in the array (index i = 0) as the root node at level 0 of the tree.
  • Calculate left child as 2 * i + 1 and add it in the left subtree of the root.
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