(80)Remove Duplicates from Sorted Array II

Follow up for "Remove Duplicates":
What if duplicates are allowed at most twice?

For example,
Given sorted array A = [1,1,1,2,2,3],

Your function should return length = 5, and A is now [1,1,2,2,3].

 1 public class Solution {
 2     public int removeDuplicates(int[] A) {
 3        if (A.length <= 2) return A.length;
 4        int index = 2;
 5        for (int i = 2; i < A.length; i++){
 6           if (A[i] != A[index - 2])
 7             A[index++] = A[i];
 8        }
 9       return index;
10     }
11 }

https://oj.leetcode.com/problems/remove-duplicates-from-sorted-array-ii/

(80)Remove Duplicates from Sorted Array II

原文：http://www.cnblogs.com/luochuanghero/p/4286385.html