Best Time to Buy and Sell Stock

leetcode 贪心

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

class Solution {
public:
    int maxProfit(vector<int>& prices) {
        int n=prices.size();
        if(n<2) return 0;//?为什么在循环调不出来
        int cur_min=prices[0];//定义当前最小价格
        int max_profit=0;
        for(int i=1;i<n;i++)
        {
            max_profit=max(max_profit,prices[i]-cur_min);
            cur_min=min(cur_min,prices[i]);
        }
        return max_profit;
    }
};