problem 628. Maximum Product of Three Numbers 题意:三个数乘积的最大值: solution1: 如果全是负数,三个负数相乘还是负数,为了让负数最大,那么其绝对值就该最小,而负数排序后绝对值小的都在末尾,所以是末尾三个数字相乘,这个跟全是正数的情况一样.那么重点在于前半段是负数,后半段是正数,那么最好的情况肯定是两个最小的负数相乘得到一个正数,然后跟一个最大的正数相乘,这样得到的肯定是最大的数,所以我们让前两个数相乘,再和数组的最后一个数字相乘,就可以…

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 方法一:排序 日期 题目地址:https://leetcode.com/problems/maximum-product-of-three-numbers/description/ 题目描述 Given an integer array, find three numbers whose product is maximum and output t…

Given an integer array, find three numbers whose product is maximum and output the maximum product. Note: The length of the given array will be in range [3,104] and all elements are in the range [-1000, 1000]. Multiplication of any three numbers in t…

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…

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…

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…

题目: 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 分析: 给定一个数组,返回其中三个元素乘积的最大值. 注意的是,这道题是可以有负数出现,且是求三个数的乘积,所以我们需要考虑负数的情况. 最先…

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 eleme…

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…

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. 提示: 这道题可以使用动态规划求解,但是由于是乘法运算,所以情况更加复杂.…

problem 643. Maximum Average Subarray I 题意:一定长度的子数组的最大平均值. solution1:计算子数组之后的常用方法是建立累加数组,然后再计算任意一定长度的子数组之和,迭代更新得到最大值. 注意:1)累加数组:2)数值类型: class Solution { public: double findMaxAverage(vector<int>& nums, int k) { vector<); //vector<int> s…

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…

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 set 位运算 日期 题目地址:https://leetcode.com/problems/maximum-product-of-word-lengths/description/ 题目描述 Given a string array words, find the maximum value of length(word[i]) * length(w…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 解题方法 依次遍历每一位 前缀树 日期 题目地址:https://leetcode.com/problems/maximum-xor-of-two-numbers-in-an-array/description/ 题目描述 Given a non-empty array of numbers, a0, a1, a2, - , an-1, where 0 ≤ ai < 2…

题目如下: 解题思路:本题的难点在于O(n)的复杂度.为了减少比较的次数,我们可以采用字典树保存输入数组中所有元素的二进制的字符串.接下来就是找出每个元素的异或的最大值,把需要找最大值的元素转成二进制表达后逐位在字典树中查找,查找的时候优先匹配反码,反码不存在则用原码. 代码如下: class Solution(object): def findMaximumXOR(self, nums): """ :type nums: List[int] :rtype: int &quo…

题目如下: We are given the root node of a maximum tree: a tree where every node has a value greater than any other value in its subtree. Just as in the previous problem, the given tree was constructed from an list A (root = Construct(A)) recursively with…

[LeetCode]895. Maximum Frequency Stack 解题报告(Python) 作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址:https://leetcode.com/problems/maximum-frequency-stack/description/ 题目描述: Implement FreqStack, a class which simulates the operation of a…

[LeetCode]718. Maximum Length of Repeated Subarray 解题报告(Python) 标签(空格分隔): LeetCode 作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址:https://leetcode.com/problems/maximum-length-of-repeated-subarray/description/ 题目描述: Given two integer arr…

[LeetCode]662. Maximum Width of Binary Tree 解题报告(Python) 标签(空格分隔): LeetCode 题目地址:https://leetcode.com/problems/maximum-width-of-binary-tree/description/ 题目描述: Given a binary tree, write a function to get the maximum width of the given tree. The width…

[LeetCode]129. Sum Root to Leaf Numbers 解题报告(Python) 标签(空格分隔): LeetCode 题目地址:https://leetcode.com/problems/sum-root-to-leaf-numbers/description/ 题目描述: Given a binary tree containing digits from 0-9 only, each root-to-leaf path could represent a numbe…

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…

Description A tournament can be represented by a complete graph in which each vertex denotes a player and a directed edge is from vertex x to vertex y if player x beats player y. For a player x in a tournament T, the score of x is the number of playe…

[转载]源博客 product 用于求多个可迭代对象的笛卡尔积(Cartesian Product),它跟嵌套的 for 循环等价.即: product(A, B) 和 ((x,y) for x in A for y in B)的效果是一样的. 使用形式如下: itertools.product(*iterables, repeat=1) iterables 是可迭代对象, repeat指定 iterable 重复几次,即: product(A,repeat=3)等价于product(A,A,A…

Given an unsorted array, find the maximum difference between the successive elements in its sorted form. Return 0 if the array contains less than 2 elements. Try to solve it in linear time/space. 题目来源:力扣(LeetCode)链接:https://leetcode-cn.com/problems/m…

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…

问题 该文章的最新版本已迁移至个人博客[比特飞],单击链接 https://www.byteflying.com/archives/3726 访问. 给定一个整型数组,在数组中找出由三个数组成的最大乘积,并输出这个乘积. 输入: [1,2,3] 输出: 6 输入: [1,2,3,4] 输出: 24 注意: 给定的整型数组长度范围是[3,104],数组中所有的元素范围是[-1000, 1000]. 输入的数组中任意三个数的乘积不会超出32位有符号整数的范围. Given an integer ar…

这是悦乐书的第275次更新,第291篇原创 01 看题和准备 今天介绍的是LeetCode算法题中Easy级别的第143题(顺位题号是628).给定一个整数数组,从其中找出三个数,使得乘积最大.例如: 输入:[1,2,3] 输出:6 输入:[1,2,3,4] 输出:24 注意: 数组的长度范围为[3,10^4],元素值范围为[-1000,1000]. 任意三个数字的乘积不会超过32位有符号整数的范围. 本次解题使用的开发工具是eclipse,jdk使用的版本是1.8,环境是win7 64位系统,…

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…

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 elem…

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…