🚀 LeetCode 1358 | Number of Substrings Containing All Three Characters | Sliding Window | C++

In this video, we'll solve LeetCode 1358 - Number of Substrings Containing All Three Characters using the Sliding Window (Two Pointers) approach. We'll begin with the brute force solution to understand the problem and then optimize it to an O(n) solution using a dynamic window. If you're preparing for coding interviews or improving your DSA skills, this problem is an excellent example of applying the sliding window technique efficiently. 📌 Topics Covered ⏱️ 00:00 – Introduction & Problem Explanation ⏱️ 00:17 – Brute Force Approach (O(n²)) ⏱️ 02:55 – C++ Code Walkthrough ⏱️ 03:55 – Time & Space Complexity Analysis ⏱️ 04:39 – Optimized Sliding Window Approach (O(n)) ⏱️ 09:04 – C++ Code Walkthrough ⏱️ 11:23 – Time & Space Complexity Analysis 💻 Source Code 🔹 Optimized Sliding Window Solution 👉 https://github.com/zorocodezz-coder/L... 🧠 Concepts Used Sliding Window Two Pointers Hash Map / Frequency Array String Algorithms Counting Valid Substrings Interview Problem Solving Time Complexity Optimization 📊 Complexity Brute Force Time: O(n²) Space: O(1) Sliding Window Time: O(n) Space: O(1) 🎯 Practice Problem LeetCode 1358: Number of Substrings Containing All Three Characters https://leetcode.com/problems/number-... 📢 If this video helped you 👍 Like the video 💬 Comment your approach or doubts 🔔 Subscribe for more LeetCode, DSA, and Interview Preparation videos 📌 Hashtags #LeetCode #LeetCode1358 #SlidingWindow #TwoPointers #DSA #Cpp #CodingInterview #Algorithms #CompetitiveProgramming #CodeHunt #Programming #InterviewPreparation