Solution: Number of Visible People in a Queue
Explore how to determine the number of visible people to the right in a queue by applying a monotonic stack. Understand the algorithm that iterates backward, using a decreasing stack to count visible individuals and mastering this common pattern in coding interviews.
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Statement
You are given an array heights representing n people standing in a queue, numbered from 0 to n - 1 from left to right. Each element heights[i] denotes the height of the person at position i. All heights are distinct.
A person at position i can see a person at position j (i < j) to their right if every person between them is shorter than both heights[i] and heights[j].
Forma ...