这是这个系列题目的第四个,题目大意和之前的差不多,但是这次提供最多k次的操作,操作还是不能同时操作即必须结束前一个操作才能进行后一个操作. 状态比较好理解,就是题目要求的缩小版,dp[k][i]表示进行到第i天时最多k次操作能得到的最大利益,但是要注意最后一次操作不一定时第i天完成的.状态转移方程:dp[k][i] = max(dp[k][i-1],dp[k-1][j]+prices[i]-prices[j]) (0<=j<=i)比如现在正在考虑dp[k][i],选择有两种,一是第i天不操作,…

Leetcode之动态规划(DP)专题-188. 买卖股票的最佳时机 IV(Best Time to Buy and Sell Stock IV) 股票问题: 121. 买卖股票的最佳时机 122. 买卖股票的最佳时机 II 123. 买卖股票的最佳时机 III 188. 买卖股票的最佳时机 IV 309. 最佳买卖股票时机含冷冻期 714. 买卖股票的最佳时机含手续费 给定一个数组,它的第 i 个元素是一支给定的股票在第 i 天的价格. 设计一个算法来计算你所能获取的最大利润.你最多可以完成 …

<span style="font-family: Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);">leetcode第188题,Best Time to Buy and Sell Stock IV题目如下:</span> https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iv/ Say you hav…

Best Time to Buy and Sell Stock IV 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 t…

Best Time to Buy and Sell Stock IV 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 k transactions. Note: You may not engage in multiple…

题意:用一个数组表示股票每天的价格,数组的第i个数表示股票在第i天的价格. 如果最多进行两次交易,但必须在买进一只股票前清空手中的股票,求最大的收益. 示例 1:Input: [3,3,5,0,0,3,1,4]Output: 6Explanation: Buy on day 4 (price = 0) and sell on day 6 (price = 3), profit = 3-0 = 3.             Then buy on day 7 (price = 1) and sel…

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…

[题目描述] 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 k transactions. Notice:You may not engage in multiple transactions at the same ti…

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

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…