If you are looking for linked list problems or coding interview resources then you have come to the right place. In the past, I have sharedbest coding interview books,courses,websites, and100+ coding problemsand today, I am going to share 20 Leetcode problems you can solve to get better ...
There are many solutions to this problem: Brute-force solution (O(mn) running time, O(1) memory): For each node ai in list A, traverse the entire list B and check if any node in list B coincides with ai. Hashset solution (O(n+m) running time, O(n) or O(m) memory): Travers...
If two lists have intersection, then their last nodes must be the same one. So when pA/pB reaches the end of a list, record the last element of A/B respectively. If the two last elements are not the same one, then the two lists have no intersections. 主页君实现如下: View Code GITH...
代码(Python3) # Definition for singly-linked list.# class ListNode:# def __init__(self, val=0, next=None):# self.val = val# self.next = nextclassSolution:defdeleteDuplicates(self,head:Optional[ListNode])->Optional[ListNode]:# 如果是空链表,则直接返回 NoneifheadisNone:returnNone# 定义一...
LeetCode题解:https://github.com/LjyYano/LeetCode LeetCode 题目汇总 LeetCode之Array题目汇总 LeetCode之Hash Table题目汇总 LeetCode之Linked List题目汇总 LeetCode之Math题目汇总 LeetCode之String题目汇总 LeetCode之Binary Search题目汇总 LeetCode之Divide and Conquer题目汇总 ...
【leetcode】237. Delete Node in a Linked List problem 237. Delete Node in a Linked List 这道题是删除链表的一个节点,和通常情况不同的是,没有给出链表的起点,只给了一个要删的节点。一般来说删除一个节点的方法是要有其前一个节点的位置,然后将其前一个节点的next连向要删节点的下...
Your code should preferably run in O(n) time and use only O(1) memory. Credits:Special thanks to@stellarifor adding this problem and creating all test cases. Subscribeto see which companies asked this question. 题目 请写一个程序,找到两个单链表最开始的交叉节点。
Given a non-negative integer represented as non-empty a singly linked list of digits, plus one to the integer. Input: [1,2,3] Output: [1,2,4] idea: the one i can think of is reverse add one and reverse back. so i implemented with this: ...
Problem LeetCode Reverse a singly linked list. Example: Input:1->2->3->4->5->NULL Output:5->4->3->2->1->NULL Follow up: A linked list can be reversed either iteratively or recursively. Could you implement both? 问题 力扣
Problem Convert a BST to a sorted circular doubly-linked list in-place. Think of the left and right pointers as synonymous to the previous and next pointers in a doubly-linked list. Let's take the following BST as an example, it may help you understand the problem better: ...