Number of Visible People in a Queue
Explore how to use stack data structures to determine the number of visible people to the right of each person in a queue. This lesson helps you understand height comparisons and visibility logic, building skills essential for tackling related coding interview problems.
We'll cover the following...
We'll cover the following...
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].
Formally, person i can see person j if:
and ...