cixuuz · October 23, 2017 18:01
diff --git a/268_1023.py b/268_1023.py
 class Solution(object):
    def missingNumber(self, nums):
        """
        :type nums: List[int]
        :rtype: int
        """
        
        n = len(nums)
        return n * (n+1) / 2 - sum(nums)
	class Solution(object):
	def missingNumber(self, nums):
	"""
	:type nums: List[int]
	:rtype: int
	"""

	n = len(nums)
	return n * (n+1) / 2 - sum(nums)