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].

class Solution {public:    int removeDuplicates(int A[], int n) {        // Start typing your C/C++ solution below        // DO NOT write int main() function                if(n<=1) return n;                int i=0;        int j=1;        bool flag = false;        int temp = A[i];                while( j