题解 | #缺失的第一个正整数#
缺失的第一个正整数
https://www.nowcoder.com/practice/50ec6a5b0e4e45348544348278cdcee5
class Solution:
def minNumberDisappeared(self, nums: List[int]) -> int:
checker = set(nums)
for i in range(1, len(nums) + 2):
if i not in checker:
return i