[leetcode] Remove Duplicates from Sorted Array

Remove Duplicates from Sorted Array

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

解法2

class Solution {public:    int removeDuplicates(int A[], int n) {        return(unique(A,A+n)-A);    }};