删除有序数组中的重复项.cpp

class Solution {
public:    
    int removeDuplicates(vector<int>& nums) {
        if (nums.size() < 2)
            return nums.size();
        int j = 0;
        for (int i = 1; i < nums.size(); i++)
            if (nums[j] != nums[i])
                nums[++j] = nums[i];
        return ++j;
    }
};