2. Best time to buy and sell stock.cpp

class Solution {
public:
    int maxProfit(vector<int>& prices) {
        int minPrice = INT_MAX;
        int maxProf = 0;
        for(int i = 0; i < prices.size(); i++)
        {
            minPrice = min(minPrice, prices[i]);
            maxProf = max(maxProf, prices[i] - minPrice);
        }
        return maxProf;
    }
};

// https://leetcode.com/problems/best-time-to-buy-and-sell-stock/submissions/