这个问题的大意是提供两个有序的整数数组A与B,A与B并集的中间数.[1,3]与[2]的中间数为2,因为2能将A与B交集均分.而[1,3]与[2,4]的中间数为2.5,取2与3的平均值.故偶数数目的中间值与奇数数目的中间值的算法不同.这个问题要求时间复杂度不超过O(log(n+m)),其中n与m分别为A与B的长度. 对于这个问题,我一开始的想法是同时对两个集合用二分查找法,这样每次过程都能有效减少一部分的冗余数据,且这样的算法的时间复杂度为O(log(n)+log(m))=O(log(max(n,…

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,…

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)). 这道题让我们求两个有序数组的中位数,而且限制了时间复杂度为O(log (m+n)),看到这个时间复杂度,自然而然的想到了应该使用二分查找法来求解.但是这道题…

原题地址:https://oj.leetcode.com/problems/median-of-two-sorted-arrays/ 题意: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)). 解题思路:这道题要求两个已经排好…

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)). 将两个有序数组合并,注意题目求得是the median of the two sorted array, 当m+n是奇数时返回的是合并后的中间数即C[(m+n)/2] 当m…

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 complexity should be O(log (m+n)). 思路:找出两个已经排好序数组的中位数.可以使用合并排序中的merge,然后直接找出中位数就能AC.时间复杂度为O(m+n).但是!…

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)). public class Solution { public double findMedianSortedArrays(int A[], int B[]) { int k…

坚持每天刷一道题的小可爱还没有疯,依旧很可爱! 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…

Question 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: nu…

题意: 给两个有序(升or降)的数组,求两个数组合并之后的中位数. 思路: 按照找第k大的思想,很巧妙.将问题的规模降低,对于每个子问题,k的规模至少减半. 考虑其中一个子问题,在两个有序数组中找第k大,我们的目的只是将k的规模减半而已,所以可以对比nums1[k/2]和nums2[k/2]的大小,假设nums1[k/2]<=nums2[k/2],那么nums1[0~k/2]这部分必定在0~k之中,那么将这部分删去,k减半,再递归处理.这里面可能有一些细节问题要考虑: 1. 如果其中1个数组的大…