Master LeetCode 1861 | Efficient Loop Strategy for Rotating the Box | Beats 100%

C++ C Py3 loop速解Leetcode 1861  Rotating the Box

一連數日Leetcode都是"rotate"的問題，這些問題都解完了嗎?先解今天的

I've been busy solving "rotation" type problems on LeetCode for the past few days. Have you all solved them? Let's start with today's problem.

[codes on Leetcode]https://leetcode.com/problems/rotating-the-box/solutions/8149055/gravity-rotate2ms-beats-100-by-anwendeng-snbl/

-----

Detailed Key Concepts & Timestamps 

00:00 | Introduction to LeetCode 1861 "Rotating the Box" (Medium difficulty).

00:18 | Defining problem constraints and symbols: stones (#), obstacles (*), and empty spaces (.).

01:15 | Visualizing gravity mechanics: how stones slide upon rotation.

01:55 | Explaining the 90-degree clockwise rotation logic.

02:30 | Step-by-step walk-through of Example 1 (2 stones, no obstacles).

02:58 | Walk-through of Example 2 (introducing obstacles).

03:25 | Detailed walk-through of the complex Example 3.

04:15 | Core algorithmic approach: using nested loops for solution.

04:30 | Analyzing problem constraints (grid size up to 500x500).

05:05 | C++ Implementation: Setting up the 2D vector and variables.

06:06 | C++ Logic: Implementing gravity within the nested loops.

07:05 | Deep dive into stone and obstacle handling logic in C++.

08:52 | Testing the initial C++ solution with sample cases.

09:40 | Code Optimization: Refactoring C++ logic using switch-case.

11:27 | Final submission and performance check for refactored C++.

11:49 | C Language approach: Memory management and loop consistency.

12:36 | Python 3 Implementation: Efficient solving using enumerate and range.