[LeetCode] 23. Merge k Sorted Lists 合并k个有序链表
Merge k sorted linked lists and return it as one sorted list. Analyze and describe its complexity. Example: 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 ...
原文：leetcode 23. Merge k Sorted Lists(堆||分治法)
Mergeksorted linked lists and return it as one sorted list. 题意：把k个已经排好序的链表整合到一个链表中，并且这个链表是排了序的。 题解：这是一道经典好题，值得仔细一说。 有两种方法，假设每个链表的平均长度是n，那么这两种方法的时间复杂度都是O nklogk 。 方法一： 基本思路是：把k个链表开头的值排个序，每次取最小的一个值放到答案链 ...
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