[题目地址](https://leetcode.cn/problems/remove-duplicates-from-sorted-array-ii/description) + 没想到栈还能这么用？ ```go func removeDuplicates(nums []int) int { stackSize := 2 for i := 2; i < len(nums); i++{ if nums[i] != nums[stackSize-2]{ nums[stackSize] = nums[i] stackSize++ } } return min(len(nums),stackSize) } ```