题解 | 买卖股票的最好时机(一)

#include <climits>
class Solution {
public:
    /**
     * 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
     *
     * 
     * @param prices int整型vector 
     * @return int整型
     */
    int maxProfit(vector<int>& prices) {
        // write code here
        int n = prices.size();
        int result = 0;
        int buyPrice = INT_MAX;
        for (int i = 0; i < n; i++) {
            buyPrice = min(buyPrice, prices[i]);
            result = max(result, prices[i] - buyPrice);
        }
        return result;
    }
};