【gpts】学算法题[缺失的第一个正数](https://leetcode.cn/problems/first-missing-positive/)
给出你的题解(https://leetcode.cn/problems/first-missing-positive/)publicclassSolution{publicintfirstMissingPositive(int[]nums){intlen=nums.length;for(inti=0;i0&&nums[i]0&&nums[i]<=len&&nums[nums[i]-1]!=nums