# https://leetcode.com/problems/monotonic-array/
def is_monotonic(nums: list[int]) -> bool:
"""
Check if a list is monotonic.
>>> is_monotonic([1, 2, 2, 3])
True
>>> is_monotonic([6, 5, 4, 4])
True
>>> is_monotonic([1, 3, 2])
False
"""
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)
)
# Test the function with your examples
if __name__ == "__main__":
# Test the function with your examples
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