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Inverting a Binary Tree: Mastering Algorithms

A Comparative Study in Ruby and JavaScript

Patrick Karsh
3 min readNov 12, 2023

In computer science, a binary tree is a foundational data structure used extensively in various applications such as databases, graphics, and algorithm design. One interesting operation that can be performed on a binary tree is inversion or mirroring, where the left and right children of all nodes are swapped. This article explores how to invert a binary tree using Ruby and JavaScript, providing insights into the implementation details in both languages.

Understanding Binary Trees

Before delving into the inversion process, it’s crucial to understand what a binary tree is. A binary tree is a tree data structure in which each node has at most two children, referred to as the left child and the right child. Here’s a simple representation of a binary tree:

      1
/ \
2 3
/ \
4 5

In this tree, 1 is the root node, 2 and 3 are the children of 1, and 4 and 5 are the children of 2.

The Concept of Inversion

Inverting a binary tree involves swapping the left and right child of every node in the tree. After inverting the above tree, it would look like this:

      1
/ \
3…

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Patrick Karsh
Patrick Karsh

Written by Patrick Karsh

NYC-based Ruby on Rails and Javascript Engineer leveraging AI to explore Engineering. https://linktr.ee/patrickkarsh

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