Leetcode#26 Remove Duplicates from Sorted Array

class Solution {
    public:
        int removeDuplicates(vector<int>& nums) {
            if (nums.size()<=1)
                return nums.size();

            int count = 1;
            int last = nums[0];
            for (int i=1; i<nums.size(); i++) {
                if (nums[i] != last) {
                    nums[count++] = nums[i];
                    last = nums[i];
                }
            }

            return count;
        }
};