原题链接:https://leetcode-cn.com/problems/remove-duplicates-from-sorted-array-ii/
该题思路借鉴【283. 移动零】
class Solution {
public int removeDuplicates(int[] nums) {
int i = 0;
for (int n : nums)
if (i < 2 || n > nums[i-2])
nums[i++] = n;
return i;
}
}