6 may 2026 | Matrix + Gravity Simulation Explained🔥 | LeetCode 1861 Rotate The Box Solution| Daily Q

In today’s LeetCode Daily Challenge, we solve 1861. Rotating the Box using an optimized matrix simulation approach.

This problem combines:

Matrix Rotation
Gravity Simulation
Two Pointer Technique
Grid Manipulation

We first simulate gravity by moving stones (#) to the right side until they hit an obstacle (*) or another stone.
After that, we rotate the matrix 90° clockwise to get the final answer.

🔥 In this video:

Complete intuition
Step-by-step dry run
Optimized Python solution
Time & Space Complexity
Interview tips

📌 Problem Link: LeetCode 1861 - Rotating the Box https://leetcode.com/problems/rotating-the-box/description/?envType=daily-question&envId=2026-05-06

🧠 Key Concepts Covered
Matrix Rotation
Simulation Problems
Two Pointers
Grid Traversal
LeetCode Daily Challenge
Python DSA
⏱️ Timestamps
00:00 Introduction
00:10 Problem Understanding
01:10 Gravity Simulation
01:20 Matrix Rotation Logic
02:15 Optimized Python Code
10:45 Dry Run
7:20 Time Complexity
7:50 Interview Tips

Видео 6 may 2026 | Matrix + Gravity Simulation Explained🔥 | LeetCode 1861 Rotate The Box Solution| Daily Q канала Anand Solves