Master this problem using the Monotonic Stack pattern.
When approaching Largest Rectangle in Histogram, look for key problem signals that suggest using the Monotonic Stack pattern. Focus on reducing redundant iterations, maintaining state invariant, and optimizing space-time complexity.
Key Invariant
Maintain optimal range bounds or hash frequency state during traversal.
Expected Complexity
Time: O(N) or O(N log N) | Space: O(1) to O(N)
Study Resource
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