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Largest Rectangle in Histogram(Part 1 Algorithm) - LeetCode 84 - Python - Visually Explained
This video explains LeetCode 84 Largest Rectangle in Histogram, a classic hard problem. Starting from brute force O(n²), we discover the key insight that each bar's rectangle width is bounded by the first shorter bar on each side. Using a monotonic increasing stack with sentinel bars at both ends, we solve it in O(n) time and O(n) space. The ...
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