923. 3Sum With Multiplicity - LeetCode】的更多相关文章

Question 923. 3Sum With Multiplicity Solution 题目大意: 给一个int数组A和一个目标值target,求满足下面两个条件的组合个数,其中i,j,k分别为数组的索引 i<j<k target = A[i] + A[j] + A[k] 思路: # step1 统计数组中每个元素出现的次数 一个元素I出现的次数记为count(I) # step2 分类 记:I=A[i], J=A[j], K=A[k], C(count(I),3) 表示从count(I)…
Given an integer array A, and an integer target, return the number of tuples i, j, k  such that i < j < k and A[i] + A[j] + A[k] == target. As the answer can be very large, return it modulo 10^9 + 7. Example 1: Input: A = [1,1,2,2,3,3,4,4,5,5], targ…
原题链接在这里:https://leetcode.com/problems/3sum-with-multiplicity/ 题目: Given an integer array A, and an integer target, return the number of tuples i, j, k  such that i < j < k and A[i] + A[j] + A[k] == target. As the answer can be very large, return it…
作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址: https://leetcode.com/problems/3sum-with-multiplicity/description/ 题目描述: Given an integer array A, and an integer target, return the number of tuples i, j, k such that i < j < k and A[i] +…
题目如下: Given an integer array A, and an integer target, return the number of tuples i, j, k  such that i < j < k and A[i] + A[j] + A[k] == target. As the answer can be very large, return it modulo 10^9 + 7. Example 1: Input: A = [1,1,2,2,3,3,4,4,5,5]…
Given an integer array A, and an integer target, return the number of tuples i, j, k  such that i < j < kand A[i] + A[j] + A[k] == target. As the answer can be very large, return it modulo 10^9 + 7. Example 1: Input: A = [1,1,2,2,3,3,4,4,5,5], targe…
Algorithm 923. 3Sum With Multiplicity - LeetCode Review Building a network attached storage device with a Raspberry Pi 搭建家用储存系统,使用树莓派和移动硬盘,搭建一个 NAS,操作简单,可玩性高,费用便宜. Tip htop top的增强版 yum install epel-release -y yum install htop -y Share Spring Security…
作者: 负雪明烛 id: fuxuemingzhu 个人博客:http://fuxuemingzhu.cn/ 个人公众号:负雪明烛 本文关键词:3sum, 三数之和,题解,leetcode, 力扣,Python, C++, Java 题目地址: https://leetcode.com/problems/3sum/description/ 题目描述: Given an array nums of n integers, are there elements a, b, c in nums suc…
作者: 负雪明烛 id: fuxuemingzhu 个人博客:http://fuxuemingzhu.cn/ 个人公众号:负雪明烛 本文关键词:four sum, 4sum, 四数之和,题解,leetcode, 力扣,Python, C++, Java 目录 题目描述 题目大意 解题方法 遍历 相似题目 参考资料 日期 题目地址:https://leetcode.com/problems/4sum/description/ 题目描述 Given an array nums of n intege…
双指针基础 双指针(Two Pointers)是面对数组.链表结构的一种处理技巧.这里“指针”是泛指,不但包括通常意义上的指针,还包括索引.迭代器等可用于遍历的游标. 同方向指针 设定两个指针.从头往尾(或从尾到头)遍历,我称之为同方向指针,第一个指针用于遍历,第二个指针满足一定条件下移动.例如 LeetCode题目 283. Move Zeroes: // 283. Move Zeroes void moveZeroes(vector<int>& nums) { ; ;j<nu…