Leetcode121. 买卖股票的最佳时机

题目传送： ​​https://leetcode.cn/problems/best-time-to-buy-and-sell-stock/​​

运行效率

代码如下

一次遍历即可

public class Solution {
    public int maxProfit(int prices[]) {
        int minprice = Integer.MAX_VALUE;
        int maxprofit = 0;
        for (int i = 0; i < prices.length; i++) {
            if (prices[i] < minprice) {
                minprice = prices[i];
            } else if (prices[i] - minprice > maxprofit) {
                maxprofit = prices[i] - minprice;
            }
        }
        return maxprofit;
    }
}