LetCode 26. 删除排序数组中的重复项

auto _=[](){ios::sync_with_stdio(0);return cin.tie(0);}();
class Solution {
public:
    int removeDuplicates(vector<int>& nums) {
        if (nums.size() <= 0)
            return 0;
        int index = 0;
        for (int i = 1; i < nums.size(); i++)
            if (nums[i] != nums[index])
                nums[++index] = nums[i];        
        return index + 1;
    }
};