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…

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…

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…

题目要求: 有两个排序的数组nums1和nums2分别为m和n大小. 找到两个排序数组的中位数.整体运行时间复杂度应为O(log(m + n)). 示例: 我的方法: 分别逐个读取两个数组的数,放到一个新的数组里,由于两个数组本身是已经排序好的,所以只需要在放在新数组时候注意对比,放入完成后,就是一个排序好的数组了,就不需要重新排序增加时间复杂度.然后再找出中位数. public static double getMediumNum(int[] nums1, int[] nums2){ int…

[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 -…

找两个排好序的数组的中间值,实际上可以扩展为寻找第k大的数组值. 参考下面的思路,非常的清晰: 代码: double findMedianofTwoSortArrays(int A[], int B[], int m, int n) { int total = m + n; //判断序列长度的奇偶,奇数只有一个中间值,偶数有两个中间值,取平均 if (total & 0x1) + ); else ) + find_kth(A, m, B, n, total / + )) / ; } int fi…

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 =…

题目难度: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)). Example 1: nums1 = [1, 3] nums2 = [2] The median is 2.0 Example 2: n…

传送门 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)). Example 1: nums1 = [1, 3] nums2 = [2] The median is 2.0 Exampl…

Level:   Hard 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)). You may assume nums1 and nums2 cannot be both empty. Examp…