publicintmaxProfit(int[]prices){if(prices.length==0){return0;}intK=2;int[][]dp=newint[prices.length][K+1];for(intk=1;k<=K;k++){intmin=prices[0];for(inti=1;i<prices.length;i++){//找出第 1 天到第 i 天 prices[buy] - dp[buy][k - 1] 的最小值min=Math.min(prices[i]...
engaging multiple transactions at the same time. You must sell before buying again. 示例3: Input: [7,6,4,3,1] Output: 0 Explanation: In this case, no transaction is done, i.e. max profit = 0. 之前有一个Best Time to Buy and Sell Stock I ,比这个题简单点儿,那个题是最多一次操作,...
returnmaxP; 对于iii: 同样不需要额外的空间,而且只需要O(n)的空间复杂度。思路就是我一开始没有钱,buy1是我第一次买股票之后剩的钱(肯定是负的,我白手起家,借钱买股票啊),sell1是我卖完第一次买的股票之后剩的钱(>=0),buy2是我用上回挣得钱(有可能需要找别人再借一点)买第二次股票,sell2是我卖完第...
Buy1[i]表示前i天做第一笔交易买入股票后剩下的最多的钱; Sell1[i]表示前i天做第一笔交易卖出股票后剩下的最多的钱; Buy2[i]表示前i天做第二笔交易买入股票后剩下的最多的钱; Sell2[i]表示前i天做第二笔交易卖出股票后剩下的最多的钱; 那么Sell2[i]=max{Sell2[i-1],Buy2[i-1]+prices[i...
714. Best Time to Buy and Sell Stock with Transaction Fee 以上每个问题,其实都有各自解法。而本文将总结上述所有问题的通用解法。 1. 一般情况 首先考虑这样一个问题: 给定一个每日股价的数组,怎么样获得最大利润? 多数人可能想到的是:“重点在于哪天买进哪天卖出,以及我们能交易几次”。但其实还有个隐藏的...
123. Best Time to Buy and Sell Stock III,理一下思路:二维数组l表示到第i天为止最多进行j次交易并且最后一次交易在最后一次交易在最后一天卖出的最大利润g表示到第i天为止最多进行j次交易的最大利润第i天卖第j支股票...
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, you must sell the stock before you buy again). ...
Best Time to Buy and Sell Stock III 仅仅能操作两次时: 两次操作不能重叠。能够分成两部分:0...i的最大利润fst 和i...n-1的最大利润snd 代码例如以下: int maxProfit(vector<int> &prices) { if (prices.size() == 0) return 0; int size = prices.size(); ...
LeetCode121. Best Time to Buy and Sell Stock JonesM https://leetcode.com/problems/best-time-to-buy-and-sell-stock/leetcode.com/problems/best-time-to-buy-and-sell-stock/ 解题思路 1. 暴力 O(n2) 复杂度,超时 class Solution { public: int maxProfit(vector<int>& prices) { int maxVal...
What are the best stocks to buy and watch? How can you improve your stock picks? When is the right time to buy a stock, and when is the optimal time to sell? The new IBD Stock Of The Day column helps you quickly and confidently answer those questions. ...