Remove Duplicates from Sorted Array @leetcode

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

class Solution {
public:
    int removeDuplicates(int A[], int n) {
        int tmp = 0;
        for(int i = 1;i < n;++i){
            if(A[i] == A[i-1]) ++tmp;
            A[i-tmp] = A[i];
        }
        return n - tmp;
    }
};

!亦是特征向量。直接使用-用后即忘版。