17 lines
447 B
Python
17 lines
447 B
Python
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class Solution:
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def isMonotonic(self, nums: List[int]) -> bool:
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direction = 0
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prev = nums[0]
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for num in nums[1:]:
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newDirection = num - prev
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if direction == 0:
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direction = newDirection
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elif direction < 0 < newDirection or direction > 0 > newDirection:
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return False
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prev = num
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return True
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