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Largest Rectangle in Histogram

hard Solve on LeetCode

Last edited: June 28, 2026

Problem
Examples
Solution
Video explanation
Method 1 - Brute Force
Complexity
Method 2 - Finding Nearest Smaller to Left and Right
Key Observation 1
Key Observation 2
Algo
Code
Method 3 - Using One Monotonic Increasing Stack, O(n)
Why Stack?
Algorithm
Code
Complexity
Why We Have Equality with N in for Loop Condition?
Code 2 - WIth Left and Right Boundary 🏆
Method 4 - Divide and Conquer (NlgN)
Code
Complexity

video explanation

Related Tags

dynamic-programming leetcode max-min rectangle stack/monotonic todo

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