描述:数组 A,对于 i < j, 找到最大的 A[j] - A[i] 代码: class Solution: # @param prices, a list of integer # @return an integer def maxProfit(self, prices): if len(prices) == 0 or len(prices) == 1: return 0 cur_min = prices[0] max_minus = 0 for i in range(1, len(pri…

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 at most k transactions. Note:You may not engage in multiple transactions at the same time (ie, yo…

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 at most two transactions. Note:You may not engage in multiple transactions at the same time (ie,…

Best Time to Buy and Sell Stock (onlineJudge: https://oj.leetcode.com/problems/best-time-to-buy-and-sell-stock/) Say you have an array for which the ith element is the price of a given stock on day i. If you were only permitted to complete at most on…

将Best Time to Buy and Sell Stock的如下思路用到此题目 思路1:第i天买入,能赚到的最大利润是多少呢?就是i + 1 ~ n天中最大的股价减去第i天的. 思路2:第i天买出,能赚到的最大利润是多少呢?就是第i天的价格减去 0~ i-1天中最小的. 和前两道题比起来的话,这道题最难了,因为限制了交易次数.解决问题的途径我想出来的是:既然最多只能完成两笔交易,而且交易之间没有重叠,那么就divide and conquer.设i从0到n-1,那么针对每一个i,看看在pr…

Problem Link: http://oj.leetcode.com/problems/best-time-to-buy-and-sell-stock-iii/ Linear Time Solution We try to solve this problem in O(n) time in the help of the algorithm in Best Time to Buy and Sell Stock, which can return the max profit by give…

problem 121. Best Time to Buy and Sell Stock code class Solution { public: int maxProfit(vector<int>& prices) { ; ; i<prices.size(); i++) { int buy_price = prices[i]; ; j<prices.size(); j++) { int sell_price = prices[j]; int tmp = sell_pri…

Say you have an array for which the i th element is the price of a given stock on day i. Design an algorithm to find the maximum profit. You may complete at most two transactions. Note: You may not engage in multiple transactions at the same time (ie…

121. Best Time to Buy and Sell Stock[easy] Say you have an array for which the ith element is the price of a given stock on day i. If you were only permitted to complete at most one transaction (ie, buy one and sell one share of the stock), design an…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 日期 题目地址:https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iv/description/ 题目描述 Say you have an array for which the ith element is the price of a given stock on day…