class Solution:
def minNumberDisappeared(self , nums: List[int]) -> int:
# write code here
nums.sort()
if 1 not in nums:
return 1
i = nums.index(1) # 查找1在哪个地方,因为是正整数,后面直接从1开始
s = 1
for v in nums[i:]:
if v == s: # 遍历里面的内容,依次判断缺失,要是依次加一不等里面的值
s = s + 1 # 就返回值
else:
break
return s