Mergeksorted linked lists and return it as one sorted list. Analyze and describe its complexity. 题解: Merge k sorted linked list就是merge 2 sorted linked list的变形题。 而且我们很自然的就想到了经典的Merge Sort,只不过那个是对数组进
import java.util.List; public class Solution { /** * * Merge k sorted linked lists and return it as one sorted list. * Analyze and describe its complexity. * * 题目大意: * 合并k个排好的的单链表 * * 解题思路: * 使用一个小堆来进行操作,先将k个单链表的第一个结点入堆,再取堆中的...
Merge k sorted linked lists and return it as one sorted list. Analyze and describe its complexity. Example: Input: [ 1->4->5, 1->3->4, 2->6 ] Output: 1->1->2->3->4->4->5->6 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. class Solution { public ListNode mergeKLists(...
Merge all the linked-lists into one sorted linked-list and return it. Example 1: Input:lists = [[1,4,5],[1,3,4],[2,6]]Output:[1,1,2,3,4,4,5,6]Explanation:The linked-lists are: [ 1->4->5, 1->3->4, 2->6 ] merging them into one sorted list: 1->1->2->3->4...
Java 四,解题过程 第一搏 一,题目描述 英文描述 You are given an array of k linked-lists lists, each linked-list is sorted in ascending order. Merge all the linked-lists into one sorted linked-list and return it. ...
一个user要得到最新的tweets, 首先找到关注人,把他们的tweets消息列表存到PriorityQueue里,就变成了Merge k Sorted Lists. 这里用OOD是因为更接近现实情况。twitter就是一个用户看到关注人消息集合的媒体。 基本的entity就是消息tweets和用户user。 tweets要体现出时间线,就要模拟linkedlist。
Merge k sorted linked lists and return it as one sorted list. Analyze and describe its complexity. Example: Input: [ 1->4->5, 1->3->4, 2->6 ] Output: 1->1->2->3->4->4->5->6 优先队列 复杂度 时间O(NlogK) 空间 O(K) ...
23. Merge k Sorted Lists Mergeksorted linked lists and return it as one sorted list. Analyze and describe its complexity. Example: Input:[ 1->4->5, 1->3->4, 2->6 ]Output:1->1->2->3->4->4->5->6 思路: 合并k个有序链表,采用分治的思想,时间复杂度O(nlogk) ...
用一个大小为K的最小堆(用优先队列+自定义降序实现)(优先队列就是大顶堆,队头元素最大,自定义为降序后,就变成小顶堆,队头元素最小),先把K个链表的头结点放入堆中,每次取堆顶元素,然后将堆顶元素所在链表的下一个结点加入堆中。 代码语言:javascript ...
Versatility:In addition to arrays, merge sort can also sort other types of data structures like trees and linked lists. Stable Sorting:As a stable sorting algorithm, merge sort keeps the relative order of equal elements in the output of the sorting process. This capability comes in handy for ...