41. First Missing Positive
Leetcode
題目
Input: nums = [1,2,0]
Output: 3
Explanation: The numbers in the range [1,2] are all in the array.Input: nums = [3,4,-1,1]
Output: 2
Explanation: 1 is in the array but 2 is missing.Input: nums = [7,8,9,11,12]
Output: 1
Explanation: The smallest positive integer 1 is missing.解答
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