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목록42. Trapping Rain Water (1)
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LeetCode: 42. Trapping Rain Water
The key observations to solve this problems: - right >= left + 2, to contain water - if we have a max height either at left or right position, then we can calculate water in the opposite position. class Solution: def trap(self, height: List[int]) -> int: ret = 0 l, r = 0, len(height) - 1 leftmax, rightmax = height[l], height[r] while r - l >= 2: curmax = max(leftmax, rightmax) if curmax == right..
Computer Science/Coding Test
2021. 9. 12. 23:20