26. Remove Duplicates from Sorted Array

class Solution {
public://不能开辟新的空间
    int removeDuplicates(vector<int>& nums) {
        //sort(nums.begin(),nums.end());//已经排好序
        if(nums.empty()) return 0;
        int count=1;
        for(int i=1;i<nums.size();i++)
        {
            if(nums[i]==nums[i-1])
                continue;
            else
                nums[count++]=nums[i];
        }
        
        return count;
    }
};