leetcode-122. Best Time to Buy and Sell Stock II

Posted 2022-12-14 千念飞羽

leetcode-122. Best Time to Buy and Sell Stock II

题目：

Say you have an array for which the ith element is the price of a given stock on day i.

Design an algorithm to find the maximum profit. You may complete as many transactions as you like (ie, buy one and sell one share of the stock multiple times). However, you may not engage in multiple transactions at the same time (ie, you must sell the stock before you buy again).

无限次交易就是计算所有增序列的和

public class Solution 
    public int maxProfit(int[] prices) 
        if(prices.length<2) return 0;
        int ret = 0;
        for(int i = 1 ; i< prices.length ; i++)
            ret += prices[i]>prices[i-1] ? prices[i]-prices[i-1] : 0;
        
        return ret;