题目链接: https://oj.leetcode.com/problems/merge-k-sorted-lists/ 问题: Merge k sorted linked lists and return it as one sorted list. Analyze and describe its complexity. 解题思路: 方法一:暴力破解 思路: 将列表一个一个地合并(例如:lists = [l1, l2, l3, l4],首先合并l1和l2,然后将合并后...
1 Linked List 和 Python 基础操作 1.1 链表原理 1.2 链表的操作:增删查改 1.3 链表 in Python 2 LeetCode 21 合并两个有序链表 2.1 读题 2.2 完整的代码实现(包括了前面的结点定义、数组和链表转换函数) 时间复杂度分析 空间复杂度分析 考虑空列表的代码改进 ...
Merge two sorted linked lists and return it as a new list. The new list should be made by splicing together the nodes of the first two lists. Example: Input:1->2->4, 1->3->4Output:1->1->2->3->4->4 因为没有空间要求,所以想到ListNode*head = new ListNode(INT_MIN);重新定义一...
LeetCode 23: 合并 k 个有序链表 LeetCode 148: 对无序链表排序 时间复杂度:O(|list1| + |list2|) 需要遍历 list1 中的全部 O(|list1|) 个结点 需要遍历 list2 中的全部 O(|list2|) 个结点 空间复杂度:O(1) 只需要维护常数个额外变量 代码(Python3) # Definition for singly-linked list. #...
LeetCode-cn Merge two sorted linked lists and return it as a sorted list. The list should be made by splicing together the nodes of the first two lists. Example 1: Input: l1 = [1,2,4], l2 = [1,3,4] Output: [1,1,2,3,4,4] ...
leetcode 23. Merge k Sorted Lists Merge k sorted linked lists and return it as one sorted list. Analyze and describe its complexity. 提议很简单,就是归并排序。 首先想到的即使逐个归并得到最终的结果,但是会超时,这是因为这种会造成数组的size大小不一样,导致归并排序的时间变长;...
之前做过两个有序链表的排序插入Leetcode21 Merge Two Sorted Lists。当时有暴力循环迭代的方法,还有递归的方法。每次加入一个元素,然后对剩下的元素继续调用函数进行排序插入。 这次是k个,感觉总体思路不会差太多。如果我们想要继续使用递归的方法,对于参数的处理就不会合并两个链表一样简单。因为当时只有两个参数,...
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 二、解决思路 思路一:直接通过循环,每次求出链表数组中最小节点直到结束 ...
Merge two sorted linked lists and return it as a new list. The new list should be made by splicing together the nodes of the first two lists. Example: Input:1->2->4, 1->3->4Output:1->1->2->3->4->4 思路: 合并两个有序链表,做法有两种,递归和迭代,递归的条件就是返回两个节点中...
LeetCode:Median of Two Sorted Arrays 2019-12-15 09:26 −There are two sorted arrays nums1 and nums2 of size m and n respectively. Find t... 夜读春秋 0 124 [Algorithm] 160. Intersection of Two Linked Lists 2019-12-19 03:19 −Write a program to find the node at which the inte...