🔍 Problem:
Given two strings s and t, return the smallest substring in s that contains all characters of t. If no such substring exists, return an empty string "".
🔥 In this video, we solve Minimum Window Substring using 3 approaches:
✅ Brute Force (O(n³)) – Generate all substrings and check for validity (inefficient 🚫).
✅ Optimized Sliding Window (O(n)) – Use a character frequency map for efficient lookups.
📌 Links
🔗 Problem: https://leetcode.com/problems/minimum-window-substring
🔗 Solution Submission: https://leetcode.com/problems/minimum-window-substring/submissions/1594849442/
📌 Timestamps:
⏳ 00:00 - Introduction
📖 00:30 - Problem Explanation
🔍 02:45 - Brute Force Approach (O(n³))
⚡ 06:30 - Optimized Sliding Window (O(n))
🚀 22:00 - Coding Implementation
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