[LeetCode] 1762. Buildings With an Ocean View

 Problem : https://leetcode.com/problems/buildings-with-an-ocean-view/

Maintain a decreasing monotonic stack.

class Solution:
    def findBuildings(self, heights: List[int]) -> List[int]:
        stack = []
        
        for i, h in enumerate(heights):
            while stack and heights[stack[-1]] <= h:
                stack.pop()
            
            stack.append(i)
        
        return stack