Merge k sorted linked lists and return it as one sorted list. Analyze and describe its complexity. Input: [ 1->4->5, 1->3->4, 2->6 ] Output: 1->1->2->3->4->4->5->6 题意: 归并k个有序链表. 思路: 用一个最小堆minHeap,将所有链表的头结点放入 新建一个linkedl…
本文始发于个人公众号:TechFlow,原创不易,求个关注 链接 Merge k Sorted Lists 难度 Hard 描述 Merge k sorted linked lists and return it as one sorted list. Analyze and describe its complexity. 给定K个有序链表,要求将它所有的元素归并到一个链表,并且有序. 样例: Input: [ 1->4->5, 1->3->4, 2->6 ] Output…
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 这道题让我们合并k个有序链表,最终合并出来的结果也必须是有序的,之前做过一道 M…
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 要合并K个排好序的链表,我用的方法是用一个优先队列每次存K个元素在队列中,根据优…
转载:https://leetcode.windliang.cc/leetCode-23-Merge-k-Sorted-Lists.html 描述 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…
题目 Merge k sorted linked lists and return it as one sorted list. Analyze and describe its complexity. 翻译 合并k个有序的链表 Hints Related Topics: LinkedList, Divide and Conquer, Heap Solution1:Divide and Conquer 参考 归并排序-维基百科 思路:分治,先分成两个子任务,然后递归子任务,最后回溯回来..这里就…
Merge k sorted linked lists and return it as one sorted list. Analyze and describe its complexity. 解法1: 采用递归的方法,不管合并几个,归根到底还是需要两两合并. 首先想到的是前两个先合并,然后再跟第三个合并,然后第四个....但是这种做法效率不高. 换个思路,采用分治法,对数量超过2的任务进行拆分,直到最后只有一个或两个链表再进行合并.代码如下: /** * Definition for si…