Ready for LeetCode

On LeetCode you don't read input or print. You fill in a function inside a class, and LeetCode calls it with the input and checks what you return.

public: lets LeetCode call the function. vector<int>& nums is the input, passed by reference (Module 8).

1class Solution {
2public:
3    int maxProfit(vector<int>& prices) {
4        // your code here
5    }
6};