这道算法题属于LeetCode中hard级别的题目,难度主要在于确定二分查找对象和极端边界情况的处理。但是一旦将这两点考虑透彻,写代码将如砍瓜切菜一般。 最后祝各位同学面试超常发挥,毕业生找个好工作,想跳槽的人工资翻倍 !! xcode 算法细节系列(8):4. Median of Two Sorted Arrays 编程算法 版权声明:本文为
LeetCode刷题系列—4.Median of Two Sorted Arrays 1.题目描述 英文版: 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 ...
Since A has m elements, so there are m+1 kinds of cutting( i = 0 ~ m ). And we know: len(left_A) = i, len(right_A) = m - i . Note: when i = 0 , left_A is empty, and when i = m , right_A is empty. With the same way, cut B into two parts at a random po...
leetcode---Median of Two Sorted Arrays 分析 这是一道非常经典的题。这题更通用的形式是,给定两个已经排序好的数组,找到两者所有元素中第 k 大的元素。O(m + n) 的解法比较直观,直接merge两个数组,然后求第k 大的元素。 不过我们仅仅需要第 k 大的元素,是不需要“排序”这么复杂的操作的。可以用一个计...
来自专栏 · leetcode每日斩 4. Median of Two Sorted Arrays 第4题是数据结构里边的经典题目,对于两个排好序的数组nums1和nums2,长度分别为m和n,怎么用O(m+n)的时间内将这两个数组合并,并且排好序列。 解:开辟一个新的数组nums3,长度为n+m,设置两个指针分别在两个数组开头flag1和flag2,然后开始比较两...
Description Median of Two Sorted Arrays: Given two sorted arrays nums1 and nums2 of size m and n respectively, return the median of the two sorted arrays. Example:Input: nums1 = [1,2,3,4,5], nums2 =…
Find the Index of the First Occurrence in a String 找出字符串中第一个匹配项的下 Grandyang刷尽天下 90 0 25:07 [LeetCode] 5. Longest Palindromic Substring 最长回文子串 Grandyang刷尽天下 113 0 13:44 [LeetCode] 15. 3Sum 三数之和 Grandyang刷尽天下 14 0 15:22 [LeetCode] 22. ...
[leetcode] 4. 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 complexity should be O(log (m+n)).
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)). Example1:nums1=[1,3]nums2=[2]Themedianis2.0Example2:nums1=[1,2]nums2=[3,4]Themedianis(2+3)/2=2.5...
Binary Discard 是笔者自己起的名字,参考Leetcode 4 Median of Two Sorted Arrays原文的解释是英文,在这里我简单翻译一下: 在这里问题泛化为:寻找两个sorted数组的第k小的元素。 如果我们比较一下A里第k/2个和B里第k/2个元素(即比较A[k/2-1]和B[k/2-1])的话,存在三种情况:(这里我们比较理想地认为k为...