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Contributes to #9943 with monotonic_array.py #12072

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Contributes to #9943 with monotonic_array.py #12072

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Contributes to #9943 with monotonic_array.py
MelihMSahin Oct 14, 2024
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[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] Oct 14, 2024
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15 changes: 15 additions & 0 deletions data_structures/arrays/monotonic_array.py
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Original file line number Diff line number Diff line change
@@ -1,3 +1,6 @@
import doctest


# https://leetcode.com/problems/monotonic-array/
def is_monotonic(nums: list[int]) -> bool:
"""
Expand All @@ -9,6 +12,16 @@ def is_monotonic(nums: list[int]) -> bool:
True
>>> is_monotonic([1, 3, 2])
False
>>> is_monotonic([1,2,3,4,5,6,5])
False
>>> is_monotonic([-3,-2,-1])
True
>>> is_monotonic([-5,-6,-7])
True
>>> is_monotonic([0,0,0])
True
>>> is_monotonic([-100,0,100])
True
"""
return all(nums[i] <= nums[i + 1] for i in range(len(nums) - 1)) or all(
nums[i] >= nums[i + 1] for i in range(len(nums) - 1)
Expand All @@ -21,3 +34,5 @@ def is_monotonic(nums: list[int]) -> bool:
print(is_monotonic([1, 2, 2, 3])) # Output: True
print(is_monotonic([6, 5, 4, 4])) # Output: True
print(is_monotonic([1, 3, 2])) # Output: False

doctest.testmod()