Solution: Number of Visible People in a Queue
Explore how to solve the problem of counting visible people in a queue by applying a monotonic decreasing stack. Learn to traverse the queue from right to left, manage stack operations to track visible individuals, and understand time and space complexity of this efficient approach.
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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 ...