class Solution:
def maximumGap(self, nums):
"""
:type nums: List[int]
:rtype: int
"""
if len(nums) < 2:
return 0
nums = sorted(nums)
max_diff = 0
for i in range(len(nums)-1):
if nums[i+1] - nums[i] > max_diff:
max_diff = nums[i+1] - nums[i]
return max_diff