LeetCode 3713 | Longest Balanced Substring I 🔥 | Brute Force + Optimization | O(n²) Explained скачать в хорошем качестве

LeetCode 3713 | Longest Balanced Substring I 🔥 | Brute Force + Optimization | O(n²) Explained

In today’s LeetCode POTD, we solve 3713. Longest Balanced Substring I (Medium). A substring is called balanced when all distinct characters in it appear the same number of times. Sounds simple? 🤔 But the trick is in how we efficiently check the condition without scanning the frequency array again and again. Solution: https://leetcode.com/problems/longest... In this video, we cover: ✔️ Problem intuition ✔️ Brute force approach ✔️ Optimized frequency tracking method ✔️ Why len == distinct × maxFreq works ✔️ Step-by-step dry run with example ✔️ Clean Java implementation ✔️ Time & Space Complexity analysis 💡 Key Concept: Instead of checking all 26 characters every time, we maintain: • distinct count • max frequency And use a mathematical condition to validate balance in O(1). ⸻ ⏱ Time Complexity: O(n²) 📦 Space Complexity: O(n) If you’re preparing for coding interviews or solving LeetCode daily, this problem builds strong fundamentals in: • Frequency arrays • Substring problems • Hashing logic • Optimization thinking Don’t forget to Like 👍 Share 🔁 and Subscribe 🔔 for daily LeetCode solutions! #codewithkhan #codinginterview #dsa #leetcode #leetcodepotd #competitiveprogramming #problemsolving #datastructures #algorithms #dailycoding #LeetCode #LeetCode3713 #LongestBalancedSubstring #CodingInterview #DSA #Java #SubstringProblems #FrequencyArray #TechInterview #CodeWithKhan