26.Remove Duplicate from sorted array

class Solution 
{
public:
    int removeDuplicates(vector<int>& nums, int k = 1)
    {
        for (int i = 1; i < nums.size();i++)        
		    if (nums[i] != nums[i-1]) nums[k++] = nums[i];     
	    return k;
    }
};