Given an array of 2n integers, your task is to group these integers into n pairs of integer, say (a1, b1), (a2, b2), ..., (an, bn) which makes sum of min(ai, bi) for all i from 1 to n as large as possible. Example 1: Input: [1,4,3,2] Output: 4 Explan…

题目描述 给定长度为 2n 的数组, 你的任务是将这些数分成 n 对, 例如 (a1, b1), (a2, b2), ..., (an, bn) ,使得从1 到 n 的 min(ai, bi) 总和最大. 示例 1: 输入: [1,4,3,2] 输出: 4 解释: n 等于 2, 最大总和为 4 = min(1, 2) + min(3, 4). 提示: n 是正整数,范围在 [1, 10000]. 数组中的元素范围在 [-10000, 10000]. 思路 分组之后min(ai, bi)的和最大…

Given an array of 2n integers, your task is to group these integers into n pairs of integer, say (a1, b1), (a2, b2), ..., (an, bn) which makes sum of min(ai, bi) for all i from 1 to n as large as possible. Example 1: Input: [1,4,3,2] Output: 4 Explan…

Given an array of 2n integers, your task is to group these integers into n pairs of integer, say (a1, b1), (a2, b2), ..., (an, bn) which makes sum of min(ai, bi) for all i from 1 to n as large as possible. Example 1: Input: [1,4,3,2] Output: 4 Explan…

题目要求 Given an array of 2n integers, your task is to group these integers into n pairs of integer, say (a1, b1), (a2, b2), ..., (an, bn) which makes sum of min(ai, bi) for all i from 1 to n as large as possible. 题目分析及思路 题目给出一个含2n个整数的数组,要求拆成n对整数对,使得每个整…

题目: Given an array of 2n integers, your task is to group these integers into npairs of integer, say (a1, b1), (a2, b2), ..., (an, bn) which makes sum of min(ai, bi) for all i from 1 to n as large as possible. Example 1: Input: [1,4,3,2] Output: 4 Exp…

Question 561. Array Partition I Solution 题目大意是,给的数组大小是2n,把数组分成n组,每组2个元素,每个组取最小值,这样就能得到n个值,怎样分组才能使这n个数相加最小. 思路:有点田忌赛马的意思,肯定最大和第二大一组,取最小值即第二大的数,依次类推...这样就需要排序,隔一个取一个. Java实现: public int arrayPairSum(int[] nums) { Arrays.sort(nums); int total = 0; for (…

561. Array Partition I[easy] Given an array of 2n integers, your task is to group these integers into n pairs of integer, say (a1, b1), (a2, b2), ..., (an, bn) which makes sum of min(ai, bi) for all i from 1 to n as large as possible. Example 1: Inpu…

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 排序 日期 题目地址:https://leetcode.com/problems/array-partition-i/#/description 题目描述 Given an array of 2n integers, your task is to group these integers into n pairs of integer, say (…

题目描述:两句话发人深思啊.... Given an array of 2n integers, your task is to group these integers into n pairs of integer, say (a1, b1), (a2, b2), ..., (an, bn) which makes sum of min(ai, bi) for all i from 1 to n as large as possible. 感觉题目的大致意思就是把数组分成很多个二元数组,对它…