The L1 Median (Weber 1909) 链接网址 Derived from a transportation cost minimization problem, the L1 median is defined to be any point which minimizes the sum of Euclidean distances to all points in the data set (fig.2). As with most median definitions, t…

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…

There are two sorted arrays A and B of size m and n respectively. Find the median of the two sorted arrays. Have you met this question in a real interview?     Example Given A=[1,2,3,4,5,6] and B=[2,3,4,5], the median is 3.5. Given A=[1,2,3] and B=[4…

Given a unsorted array with integers, find the median of it. A median is the middle number of the array after it is sorted. If there are even numbers in the array, return the N/2-th number after sorted. Example Given [4, 5, 1, 2, 3], return 3 Given […

Median 题目链接: http://acm.split.hdu.edu.cn/showproblem.php?pid=5857 Description There is a sorted sequence A of length n. Give you m queries, each one contains four integers, l1, r1, l2, r2. You should use the elements A[l1], A[l1+1] ... A[r1-1], A[r1]…

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)). 思路: 难,知道用分治算法,却不知道怎么用.只好看答案. 基本的思路是如果中位数是第K个数,A[i]如果是中位数,那么A[i]已经大于了i个数,还应大于K - i - 1个…

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)). Solution 1 -- Traverse Array Use merge procedure of merge sort here.…

2018-11-18 23:33:28 问题描述: 问题求解: 这个问题是一个比较有难度的可以使用二分搜索法求解的问题,如果采用朴素的解法进行merge再找中位数的话,其时间复杂度为O(n1 + n2).但是如果使用二分查找法的话,可以将时间复杂度降到O(min(n1, n2)). 其实本题可以看成两排序数组前k小的数的特殊情况,当然了解法上是差不多的. 具体来说,我们需要找到的就是nums1对最后的前k个数到底贡献了多少个数,如果这个量确定了,那么所有的问题就迎刃而解. 所以主要的二分搜索就是…

leetcode-algorithms-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)). You may assume nums1 and num…

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…