做leetcode题目的第二天,我是按照分类来做的,做的第一类是Array类,碰见的第二道题目,也就是今天做的这个,题目难度为hard.题目不难理解,但是要求到了时间复杂度,就需要好好考虑使用一下算法了.刚开始没啥思路,就用暴力的方法,用双层循环遍历的一下两个已经排好序的数组 ,在中间位置停止找道中位数.这样时间复杂度是肯定不能满足题目要求的,但是程序测试还是过了. 苦于自己没有思路,又不甘心就这样水过一道题,还是搜了一下博客,膜拜了一下大神.最好的方法是将中位数  -- 两个数组数据排好序之后…

Median of Two Sorted Arrays There are two sorted arrays A and B of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should be O(log (m+n)). 解法一:保底做法,O(m+n)复杂度 按照归并排序的思路,先归并,再找中间值. class Solution { p…

我现在在做一个叫<leetbook>的免费开源书项目,力求提供最易懂的中文思路,目前把解题思路都同步更新到gitbook上了,需要的同学可以去看看 书的地址:https://hk029.gitbooks.io/leetbook/ 004. Median of Two Sorted Arrays[H] 题目 There are two sorted arrays nums1 and nums2 of size m and n respectively. Find the median of th…

4. Median of Two Sorted Arrays 这应该是最简单最慢的方法了,因为本身为有序,所以比较后排序再得到中位数. double findMedianSortedArrays(int* nums1, int nums1Size, int* nums2, int nums2Size) { int numsSize = nums1Size + nums2Size; int *nums = (int*)malloc(sizeof(int)*numsSize); double med…

Problem:There are two sorted arrays A and B of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should be O(log (m+n)). 首先要知道什么是median,也就是我们所知的中位数,处于中间位置的数,很简单,如果长度为奇数,那么中位数就是中间的数,如,1,2,4,那么中位数就是2.如…

一天一道LeetCode (一)题目 There are two sorted arrays nums1 and nums2 of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should be O(log (m+n)). 给定两个排好序的数组,求两个数组的中间值. 例如:[1 2]和[1 2] 返回值:1.5 (二)解题思路 时间复杂度要…

题目链接:https://leetcode.com/problems/median-of-two-sorted-arrays/ 题目:There are two sorted arrays nums1 and nums2 of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should be O(log (m+n)). 解题思路:将两个有序数…

题目: There are two sorted arrays nums1 and nums2 of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should be O(log (m+n)). Example 1: nums1 = [1, 3] nums2 = [2] The median is 2.0 Example 2: nums1 =…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 公众号:负雪明烛 本文关键词:数组,中位数,题解,leetcode, 力扣,python, c++, java 目录 题目描述 题目大意 解题方法 二分查找 日期 题目地址:https://leetcode.com/problems/median-of-two-sorted-arrays/ 题目描述 There are two sorted arrays nums1 and nums2…

题目描述: There are two sorted arrays nums1 and nums2 of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should be O(log (m+n)). 解题思路: 这道题个人觉得是很难的,要想解出这个题,就必须了解一下几点: 1.求一列长度为len的数字的中位数,其实也可以被看做是求第len/2…

There are two sorted arrays nums1 and nums2 of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should be O(log (m+n)). Example 1: nums1 = [1, 3] nums2 = [2] The median is 2.0 Example 2: nums1 = [1,…

There are two sorted arrays nums1 and nums2 of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should be O(log (m+n)). Example 1: nums1 = [1, 3] nums2 = [2] The median is 2.0 Example 2: nums1 = [1,…

题目: There are two sorted arrays nums1 and nums2 of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should be O(log (m+n)). Example 1: nums1 = [1, 3] nums2 = [2] The median is 2.0 Example 2: nums1 =…

题目要求很简单,就是给你两个已经排好序的数组nums1(长度为m)和nums2(长度为n),找出他们的中间值.返回值类型double是因为如果数字个数是偶数个,就要返回中间两个数的平均值.这题最简单的方法就是通过两个指针分别从nums1和nums2的头一直移动,直到走到nums1和nums2的中值位置为止.整个过程耗时大概是O((m+n) / 2).但是题目附带需要用O(log(m+n))的时间完成,所以上述方法就不能用了.能用到O(log(m+n))的方法在leetcode的算法题里面没有几个…

public double FindMedianSortedArrays(int[] nums1, int[] nums2) { int t=nums1.Length+nums2.Length; int mid1=0; int mid2=0; int i=0; int p1=0; int p2=0; while(p1<nums1.Length&&p2<nums2.Length&&i<=(t/2)) { if(nums1[p1]<nums2[p2])…

[题意] 给两个有序数组,寻找两个数组组成后的中位数,要求时间复杂度为O(log(n+m)). [题解] 感觉这道题想法非常妙!! 假定原数组为a,b,数组长度为lena,lenb. 那么中位数一定是第k = (lena + lenb + 1)/ 2小的数,如果是数组长度和是偶数的话就是第k = (lena + lenb + 1)/ 2小和第k = (lena + lenb + 2)/ 2小的数,所以我们可以把问题转化为求第k小的数. 然后分别对a,b找第k / 2小的数,假如a[k / 2 -…

4. Median of Two Sorted Arrays 题目 There are two sorted arrays nums1 and nums2 of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should be O(log (m+n)). Example 1: nums1 = [1, 3] nums2 = [2] The me…

题目来源:https://leetcode.com/problems/median-of-two-sorted-arrays/ There are two sorted arrays nums1 and nums2 of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should be O(log (m+n)). 解题思路: 题目是这样的:给…

题目Median of Two Sorted Arrays(难度Hard) 方案1,数组合并&排序调用Java方法 import java.util.* class Solution { fun findMedianSortedArrays(nums1: IntArray, nums2: IntArray): Double { val lenNums1 = nums1.size val lenNums2 = nums2.size val array = Arrays.copyOf(nums1,…

一道非常经典的题目,Median of Two Sorted Arrays.(PS:leetcode 我已经做了 190 道,欢迎围观全部题解 https://github.com/hanzichi/leetcode) 题意非常简单,给定两个有序的数组,求中位数,难度系数给的是 Hard,希望的复杂度是 log 级别.回顾下中位数,对于一个有序数组,如果数组长度是奇数,那么中位数就是中间那个值,如果长度是偶数,就是中间两个数的平均数. O(nlogn) 最容易想到的解法是 O(nlogn) 的解…

LeetCode(3) || Median of Two Sorted Arrays 题记 之前做了3题,感觉难度一般,没想到突然来了这道比较难的,星期六花了一天的时间才做完,可见以前基础太差了. 题目内容 There are two sorted arrays A and B of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should…

Median of Two Sorted Arrays There are two sorted arrays A and B of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should be O(log (m+n)).SOLTION 1: 1. 我们借用findKthNumber的思想.先实现findKthNumber,如果是偶数个,…

4. Median of Two Sorted Arrays 题目链接:https://leetcode.com/problems/median-of-two-sorted-arrays/ Description: There are two sorted arrays nums1 and nums2 of size m and n respectively. Find the median of the two sorted arrays. The overall run time compl…

Median of Two Sorted Arrays There are two sorted arrays A and B of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should be O(log (m+n)). time=378ms accepted <pre name="code" class="j…

Median of Two Sorted Arrays 搜索时间复杂度的时候,看到归并排序比较适合这个题目.中位数直接取即可,所以重点是排序. 再来看看治阶段,我们需要将两个已经有序的子序列合并成一个有序序列 by 图解排序算法(四)之归并排序 第1次提交 class Solution: def findMedianSortedArrays(self, nums1, nums2): """ :type nums1: List[int] :type nums2: List[in…

4. Median of Two Sorted Arrays There are two sorted arrays nums1 and nums2 of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should be O(log (m+n)). Example 1: nums1 = [, ] nums2 = [] The median i…

4. Median of Two Sorted Arrays 给定两个有序的整数序列.求中位数,要求复杂度为对数级别. 通常的思路,我们二分搜索中位数,对某个序列里的某个数 我们可以在对数时间内通过二分算法求得两个序列中比它小的数,整体复杂度也是对数级别.但是代码实现较为困难. 换一个思路,我们把中位数不要当作一个数,而当作一个序列的划分.划分后,序列的左半部设为L,右半部设为R 满足max(L)<=min(R)且满足len(L)==len(R) 二分搜索这个划分即可.对于A+B的长度为奇数的情…

4. Median of Two Sorted Arrays Hard There are two sorted arrays nums1 and nums2 of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should be O(log (m+n)). You may assume nums1 and nums2 cannot be b…

题目 There are two sorted arrays nums1 and nums2 of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should be O(log (m+n)). You may assume nums1 and nums2 cannot be both empty. Example 1: nums1 = [1,…

题目描述:Median of Two Sorted Arrays There are two sorted arrays A and B of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should be O(log (m+n)). 分析: 题目中的数组A和数组B都是排好序的,首先想到的算法是:设置一个计数器m,指针pA指向数组A的首地址…