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...
https://leetcode.com/problems/best-time-to-buy-and-sell-stock/解题思路1. 暴力 O(n^2) 复杂度,超时class Solution { public: int maxProfit(vector<int>& prices) { int maxVal = 0; int n = price…
LeetCode Best Time to Buy and Sell Stock 买卖股票的最佳时机 (DP),题意:给定一个序列,第i个元素代表第i天这支股票的价格,问在最佳时机买入和卖出能赚多少钱?只买一次,且仅1股,假设本钱无限。思路:要找一个最低价的时候买入,在最高价的时候卖出利润会最大。
此题归类于贪心算法, 相对于best-time-to-buy-and-sell-stock,上一个题是用动态规划来做, 但是上一个题有一个限制就是不能在卖完股票的下一天买股票, 而此题没有这个限制。 这个题目的贪心策略就是 当买入一个卖出能赚钱, 就进行卖出操作 AC代码 class Solution { public: int maxProfit(vector<int>& pri...
Leetcode 122. Best Time to Buy and Sell Stock II 应钟有微 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 as many transactions as you like (i.e., buy one and se...
最近看到网站上提到了leetcode网站,用来在线面试算法;就上去看了下,自己也解决了一题,蛮有意思的,偶尔做做算法练练脑。 题目: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
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...
LeetCode Best Time to Buy and Sell Stock 1.题目 Say you have an array for which theithelement is the price of a given stock on dayi. If you were only permitted to complete at most one transaction (ie, buy one and sell one share of the stock), design an algorithm to find the ...
原题地址 https://leetcode.com/problems/best-time-to-buy-and-sell-stock/description/ 题意 给定数组...
LeetCode - Best Time to Buy and Sell Stock 题目的意思是整个过程中只能买一只股票然后卖出,也可以不买股票。也就是我们要找到一对最低价和最高价,最低价在最高价前面,以最低价买入股票,以最低价卖出股票。 分析一:扫描一遍,找到最大增长即可。从前往后,用当前价格减去此前最低价格,就是在当前点卖出股票...