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LeetCode 3719 🔥 Longest Balanced Subarray I | Brute Force Explained | O(n²) Solution

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Feb 10, 2026
10:54

In today’s LeetCode Problem of the Day, we solve 3719. Longest Balanced Subarray I (Medium) 🚀 A subarray is called balanced when the number of distinct even elements is equal to the number of distinct odd elements. 👉 We start by discussing why a naive brute-force approach is inefficient 👉 Then we move to an optimized O(n²) brute-force solution using HashSets 👉 We also explain why a sliding window approach fails for this problem This solution is: • ✅ Easy to understand • ✅ Interview-friendly • ✅ Perfect for daily LeetCode practice Solution: https://leetcode.com/problems/longest-balanced-subarray-i/solutions/7567523/easy-java-solution-beginners-friendly-by-fqzk 📌 Time Complexity: O(n²) 📌 Space Complexity: O(n) If you’re preparing for coding interviews or following LeetCode daily challenges, this video is for you! 👉 Like 👍 | Share 🔁 | Subscribe 🔔 to CodeWithKhan for daily LeetCode explanations. #codewithkhan #codinginterview #dsa #leetcode #leetcodepotd #problemsolving #competitiveprogramming #datastructures #algorithms #dailycoding #LeetCode #LeetCode3719 #LongestBalancedSubarray #LeetCodePOTD #DSA #CodingInterview #Java #BruteForce #TimeComplexity #HashSet #CodeWithKhan #dailycodingchallenge

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LeetCode 3719 🔥 Longest Balanced Subarray I | Brute Force Explained | O(n²) Solution | NatokHD