LeetCode Solution: 48. Rotate Image

Matrix Makeover: Rotating Images 90 Degrees In-Place with C++ Hey LeetCoders and aspiring problem-solvers! 👋 Vansh2710 here, ready to demystify another classic LeetCode problem that might seem tricky at first glance, but unveils an elegant two-step solution. Today, we're diving into problem 48: Rotate Image . Get ready to spin some matrices! 🔄 The Problem: Spin That Image! You're given an n x n 2D matrix, which you can think of as a square image made of pixels (where each pixel has a numerical value). Your task is to rotate this "image" by 90 degrees clockwise. Sounds simple, right? Here's the catch: You must do this rotation in-place . This means you can't create a brand new matrix, fill it with rotated values, and then return it. You have to modify the original matrix directly. DO NOT allocate another 2D matrix. Let's look at an example to really nail down what we're aiming for: Input: matrix = [[ 1 , 2 , 3 ], [ 4 , 5 , 6 ], [ 7 , 8 , 9 ]] Imagine this as: 1 2 3 <-- Top row 4 5 6 7 8