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deque-blog/trap_water_1.py

Last active March 7, 2020 09:45
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trap_water_1.py
def trap(heights: List[int]) -> int:
total_volume = 0
for i, h in enumerate(heights):
left_h = max(heights[:i], default=0)
right_h = max(heights[i+1:], default=0)
volume = max(0, min(left_h, right_h) - h)
total_volume += volume
return total_volume
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