/*** 找到有环链表的入口* @param head* @return*/publicstatic<T> ListNode<T>findEntranceInLoopList(ListNode<T> head){ListNode<T> slowPointer, fastPointer;//使用快慢指针,慢指针每次向前一步,快指针每次两步boolean isLoop =false;slowPointer = fastPointer = head;while(fastPointer != null && fa...
https://leetcode-cn.com/problems/two-sum/) *Linked List 实战题目*# ·https://leetcode.com/problems/reverse-linked-list/ ·https://leetcode.com/problems/swap-nodes-in-pairs ·https://leetcode.com/problems/linked-list-cycle ·https://leetcode.com/problems/linked-list-cycle-ii ·https://...
下面给出AC代码,遍历了两次链表。 impl Solution { pub fn rotate_right(mut head: Option<Box<ListNode>>, k: i32) -> Option<Box<ListNode>> { if head.is_none() || k <= 0 { return head } // Step 1 - loop the linked-list and count total length (Don't need mut) let mut ptr: ...
left: # Iterate the "linked list" starting from the head # node and using the next pointers, establish the # corresponding links for the next level head = leftmost while head: # CONNECTION 1 head.left.next = head.right # CONNECTION 2 if head.next: head.right.next = head.next.left #...
链表类(Linked List): 基础知识:链表如何实现,如何遍历链表。链表可以保证头部尾部插入删除操作都是O(1),查找任意元素位置O(N) 基础题目: Leetcode 206. Reverse Linked List Leetcode 876. Middle of the Linked List 注意:快慢指针和链表反转几乎是所有链表类问题的基础,尤其是反转链表,代码很短,建议直接背熟...
You will be given the number n and a list of undirected edges (each edge is a pair of labels). You can assume that no duplicate edges will appear in edges. Since all edges are undirected, [0, 1] is the same as [1, 0] and thus will not appear together in...
Water can only flow in four directions (up, down, left, or right) from a cell to another one with height equal or lower. Find the list of grid coordinates where water can flow to both the Pacific and Atlantic ocean. Note: The order of returned grid coordinates does not matter. Both...
1801.Number-of-Orders-in-the-Backlog (M+) 2166.Design-Bitset (M+) Linked List 146.LRU-Cache (H-) 460.LFU Cache (H) 432.All-O-one-Data-Structure (H) 2289.Steps-to-Make-Array-Non-decreasing (H) 2296.Design-a-Text-Editor (M+) Stack 032.Longest-Valid-Parentheses (H) 155.Min-...
* Definition for singly-linked list. * public class ListNode { * int val; * ListNode next; * ListNode(int x) { val = x; } * } */ class Solution { /*** 迭代 ***/ public ListNode reverseList(ListNode head) { ListNode pre = null; ListNode next = null...
0323 Number of Connected Components in an Undirected Graph 62.0% Medium 0324 Wiggle Sort II Go 32.9% Medium 0325 Maximum Size Subarray Sum Equals k 49.3% Medium 0326 Power of Three Go 45.2% Easy 0327 Count of Range Sum Go 36.0% Hard 0328 Odd Even Linked List Go 60.2% Medium 03...