近期一直忙着写paper,非常久没做题,一下子把题目搞复杂了..思路理清楚了非常easy,每次仅仅需更新2个值:当前子序列最大乘积和当前子序列的最小乘积.最大乘积被更新有三种可能:当前A[i]>0,乘曾经面最大的数(>0),得到新的最大乘积:当前A[i]<0,乘曾经面最小的数(<0),得到新的最大乘积:A[i]它自己>0,(A[i-1]==0.最小乘积同理.. class Solution { public: int Max(int a, int b, int c) { in…

LeetCode Maximum Product Subarray Description Given a sequence of integers S = {S1, S2, . . . , Sn}, you should determine what is the value of the maximum positive product involving consecutive terms of S. If you cannot find a positive sequence, you…

Maximum Product Subarray Title: Find the contiguous subarray within an array (containing at least one number) which has the largest product. For example, given the array [2,3,-2,4],the contiguous subarray [2,3] has the largest product = 6. 对于Product…

Find the contiguous subarray within an array (containing at least one number) which has the largest product. For example, given the array [2,3,-2,4],the contiguous subarray [2,3] has the largest product = 6. 这个求最大子数组乘积问题是由最大子数组之和问题演变而来,但是却比求最大子数组之和要复…

Find the contiguous subarray within an array (containing at least one number) which has the largest product. For example, given the array [2,3,-2,4],the contiguous subarray [2,3] has the largest product = 6. Hide Tags Array Dynamic Programming      …

Find the contiguous subarray within an array (containing at least one number) which has the largest product. For example, given the array [2,3,-2,4],the contiguous subarray [2,3] has the largest product = 6. 子数组乘积最大 class Solution { public: int maxPr…

Given an integer array nums, find the contiguous subarray within an array (containing at least one number) which has the largest product. Example 1: Input: [2,3,-2,4] Output: 6 Explanation: [2,3] has the largest product 6. Example 2: Input: [-2,0,-1]…

原题地址:https://oj.leetcode.com/problems/maximum-product-subarray/ 解题思路:主要需要考虑负负得正这种情况,比如之前的最小值是一个负数,再乘以一个负数就有可能成为一个很大的正数. 代码: class Solution: # @param A, a list of integers # @return an integer def maxProduct(self, A): if len(A) == 0: return 0 min_tmp…

LeetCode 新题又更新了.求:最大子数组乘积. https://oj.leetcode.com/problems/maximum-product-subarray/ 题目分析:求一个数组,连续子数组的最大乘积. 解题思路:最简单的思路就是3重循环.求解productArray[i][j]的值(productArray[i][j]为A[i]到A[j]的乘积),然后记录当中最大值,算法时间复杂度O(n3).必定TLE. 第一次优化,动态规划.求解:productArray[i][j]的时候不用…

题意:给一个size大于0的序列,求最大的连续子序列之积.(有正数,负数,0) 思路:正确分析这三种数.0把不同的可能为答案的子序列给隔开了,所以其实可以以0为分隔线将他们拆成多个序列来进行求积,这样就没有0了. 接着是负数,负数如果遇到一个负数,可能反而比那个正数要大,所以正负数都要保存,遍历一次即可.在奇数个负数时,其实可能的只有2种:(1)包含最前面一个负数的序列(2)包含最后面一个负数的序列(当然不包含最前面1个,同理(1)也是). class Solution { public: in…

53. Maximum Subarray 之前的值小于0就不加了.dp[i]表示以i结尾当前的最大和,所以需要用一个变量保存最大值. 动态规划的方法: class Solution { public: int maxSubArray(vector<int>& nums) { vector<int> dp(nums.size()); int res = INT_MIN; ;i < nums.size();i++){ dp[i] = nums[i]; &&…

Maximum Product Subarray Given an integer array nums, find the contiguous subarray within an array (containing at least one number) which has the largest product. Example 1: Input: [2,3,-2,4] Output: 6 Explanation: [2,3] has the largest product 6. Ex…

题目链接:Maximum Product Subarray solutions同步在github 题目很简单,给一个数组,求一个连续的子数组,使得数组元素之积最大.这是求连续最大子序列和的加强版,我们可以先看看求连续最大子序列和的题目maximum-subarray,这题不难,我们举个例子. 假设数组[1, 2, -4, 5, -1, 10],前两个相加后得到3,更新最大值(为3),然后再加上-4后,和变成-1了,这时我们发现如果-1去加上5,不如舍弃前面相加的sum,5单独重新开始继续往后相加…

Add Date 2014-09-23 Maximum Product Subarray Find the contiguous subarray within an array (containing at least one number) which has the largest product. For example, given the array [2,3,-2,4],the contiguous subarray [2,3] has the largest product = …

Question 152. Maximum Product Subarray Solution 题目大意:求数列中连续子序列的最大连乘积 思路:动态规划实现,现在动态规划理解的还不透,照着公式往上套的,这个问题要注意正负,需要维护两个结果 Java实现: public int maxProduct(int[] nums) { if (nums.length == 1) return nums[0]; // 定义问题:状态及对状态的定义 // 设max[i]表示数列中第i项结尾的连续子序列的最大连…

Maximum Subarray 一.题目描写叙述 就是求一个数组的最大子序列 二.思路及代码 首先我们想到暴力破解 public class Solution { public int maxSubArray(int[] nums) { int sum = Integer.MIN_VALUE; for(int i=0; i<nums.length; i++) for(int j=i+1; j<nums.length; j++) sum = Math.min(nums[i]+nums[j],…

Given an integer array nums, find the contiguous subarray within an array (containing at least one number) which has the largest product. Example 1: Input: [2,3,-2,4] Output: 6 Explanation: [2,3] has the largest product 6. Example 2: Input: [-2,0,-1]…

Find the contiguous subarray within an array (containing at least one number) which has the largest product. For example, given the array [2,3,-2,4],the contiguous subarray [2,3] has the largest product = 6. 题目大意:给定一个数组,找出最大连续子数组乘积. 解题思路: 解法一.我是用动态规划…

Find the contiguous subarray within an array (containing at least one number) which has the largest product. For example, given the array [2,3,-2,4],the contiguous subarray [2,3] has the largest product = 6. 题目标签:Array, Dynamic Programming 题目给了我们一个nu…

This a task that asks u to compute the maximum product from a continue subarray. However, you need to watch out the values' type contains positive, negative, zero. I solved it using dynamic process in which there are two arrays to achieve the goal. m…

Given an array consisting of n integers, find the contiguous subarray whose length is greater than or equal to k that has the maximum average value. And you need to output the maximum average value. Example 1: Input: [1,12,-5,-6,50,3], k = 4 Output:…

Given an integer array, find three numbers whose product is maximum and output the maximum product. Example 1: Input: [1,2,3] Output: 6 Example 2: Input: [1,2,3,4] Output: 24 Note: The length of the given array will be in range [3,104] and all elemen…

Question Given an integer array, find three numbers whose product is maximum and output the maximum product. Example 1: Input: [1,2,3] Output: 6 Example 2: Input: [1,2,3,4] Output: 24 Note: The length of the given array will be in range [3,104] and a…

题目: Find the contiguous subarray within an array (containing at least one number) which has the largest product. For example, given the array [2,3,-2,4], the contiguous subarray [2,3] has the largest product = 6. 题意: 题目中给出一个(至少包含一个元素)整形数组,求一个子数组(元素连续…

题目链接 题目要求: Find the contiguous subarray within an array (containing at least one number) which has the largest product. For example, given the array [2,3,-2,4], the contiguous subarray [2,3] has the largest product = 6. 题目分析参考自一博文: 这道题跟Maximum Subarr…

Find the contiguous subarray within an array (containing at least one number) which has the largest product. For example, given the array [2,3,-2,4],the contiguous subarray [2,3] has the largest product = 6. 思路:类似Maximum Subarray,不同的是 max(max_local*n…

Find the contiguous subarray within an array (containing at least one number) which has the largest product. For example, given the array [2,3,-2,4],the contiguous subarray [2,3] has the largest product = 6. 思路:DP.这里我们实际上不需要O(n)的空间,只需要用变量将遍历到的最大值记录下来…

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 双重循环 动态规划 参考资料 日期 题目地址:https://leetcode.com/problems/maximum-product-subarray/description/ 题目描述 Given an integer array nums, find the contiguous subarray within an array (conta…

Find the contiguous subarray within an array (containing at least one number) which has the largest product. For example, given the array [2,3,-2,4],the contiguous subarray [2,3] has the largest product = 6. mlgb的,今天遇到这个题搞了半天.记录下. 首先解放可以使用穷举.通过二维数组pr…

Find the contiguous subarray within an array (containing at least one number) which has the largest product. For example, given the array [2,3,-2,4], the contiguous subarray [2,3] has the largest product = 6. 解题思路: 计算连续的积最大,由于会有负数出现,因此需要用两个int表示包含num…