LeetCode Solution: 189. Rotate Array

Unlocking Array Rotation: The Elegant Three-Reversals Trick (LeetCode 189) Hey there, fellow coders! 👋 Vansh here, ready to tackle another classic LeetCode challenge that's as tricky as it is insightful: Rotate Array . Don't let the "medium" difficulty label scare you off! We're going to break it down, build up our intuition, and master an incredibly elegant solution that's a true interview favorite. Imagine you have a deck of cards, and you want to move some cards from the end to the beginning. That's essentially what we're doing here! Let's dive in! 🚀 Problem Explanation: The Rotating Challenge The problem, 189. Rotate Array , asks us to take an array of numbers ( nums ) and rotate it to the right by k steps. What does "rotate to the right" mean? It means the elements from the end of the array move to the front, pushing everything else further right. Let's look at an example to make it super clear: Input: nums = [1, 2, 3, 4, 5, 6, 7] , k = 3 Rotate 1 step right: The 7 moves to the fr