是之前两道题leetcode Best Time to Buy and Sell Stock和leetcode Best Time to Buy and Sell Stock II的加强版。 这里要求只能买两次股票。 做了一个多小时,试了好多次,终于AC了。 思路:找到有可能为断点的地方,也就是出现递减的地方,递减了就说明有损失所以有可能卖出。 对每个可能的分割点,计算左右两边...
二、Best Time to Buy and Sell Stock II Say you have an array for which theith element is the price of a given stock on dayi. 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 ti...
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...
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]...
Leetcode 123. Best Time to Buy and Sell Stock III 应钟有微 1 人赞同了该文章 题目描述: 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...
Best Time to Buy and Sell Stock III 和 IV 原题III 原题IV 第三题是限制次数两次,第四题是限制交易次数k次,在解第三题的时候,可以用一些方式,达到不增加维度的方式来解题,具体参照LeetCode讨论区里面的解法吧。而第四题是比第三题更加具有普遍性,上面说过,如果有新的决定因素,我们可以将它作为一个新的维...
Note: You may not engage in multiple transactions at the same time (ie, you must sell the stock before you buy again). class Solution { public: /** * @param prices: Given an integer array * @return: Maximum profit */ int maxProfit(vector<int> &prices) { if (prices.size() == 0...
详见:https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iii/description/ Java实现: class Solution { public int maxProfit(int[] prices) { int n=prices.length; if(prices == null || n <= 1){ return 0; } int maxProfit = 0; ...
123.best-time-to-buy-and-sell-stock-iii 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 ...
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