/*** Definition for singly-linked list.* struct ListNode {* int val;* ListNode *next;* ListNode(int x) : val(x), next(NULL) {}* };*/classSolution{public:ListNode*deleteDuplicates(ListNode* head){if(head ==NULL)returnNULL;ListNodedummy(0);dummy.next = head;ListNode *node = &dummy;...
Given a linked list, determine if it has a cycle in it. Follow up: Can you solve it without using extra space? /** * Definition for singly-linked list. * struct ListNode { * int val; * ListNode *next; * ListNode(int x) : val(x), next(NULL) {} * };*/classSolution {public:...
# Definition for singly-linked list. # class ListNode: # def __init__(self, x): # self.val = x # self.next = None class Solution: def hasCycle(self, head: ListNode) -> bool: #依然是快慢指针的解法 fast , slow = head , head while fast and fast.next: slow = slow.next fast ...
reduce(lambda x, y: 10 * x + y, res) + 1 dummy = ListNode(0) p = dummy for i in str(num): p.next = ListNode(int(i)) p = p.next return dummy.next 思路二:翻转链表加一,然后再翻转 # Definition for singly-linked list. # class ListNode: # def __init__(self, x): # ...
1 <= list2.length <= 10000 「思路」 经典链表基础题,按照题意模拟即可,锻炼对基础数据结构的熟悉程度。应该也是面试经常会考的题目。 时间复杂度:O(n) . 代码语言:javascript 代码运行次数:0 运行 AI代码解释 /** * Definition for singly-linked list. * struct ListNode { * int val; * ListNode *ne...
* Definition for singly-linked list. * public class ListNode { * int val; * ListNode next; * ListNode() {} * ListNode(int val) { this.val = val; } * ListNode(int val, ListNode next) { this.val = val; this.next = next; } ...
题目保证链表中节点的值互不相同 若使用 C 或 C++ 语言,你不需要 free 或 delete 被删除的节点 /** * Definition for singly-linked list. * struct ListNode { * int val; * ListNode *next; * ListNode(int x) : val(x), next(NULL) {} * }; */ class Solution { public: ListNode* deleteNo...
83. Remove Duplicates from Sorted List(Easy) Given a sorted linked list, delete all duplicates such that each element appear only once. Example 1: Input: 1->1->2 Output: 1->2 Example 2: Input: 1->1->2->3->3 Output: 1->2->3 /** * Definition for singly-linked list. * struc...
174 Remove Nth Node From End of List C++ O(n) O(1) Easy LeetCode 372 Delete Node in the Middle of Singly Linked List C++ O(1) O(1) Easy CTCI 422 Length of Last Word C++ O(n) O(1) Easy LeetCode ##Tree#TitleSolutionTimeSpaceDifficultyTagNote 85 Insert Node in a Binary Sear...
173 Insertion Sort List C++ O(n^2) O(1) Easy LeetCode 174 Remove Nth Node From End of List C++ O(n) O(1) Easy LeetCode 223 Palindrome Linked List C++ O(n) O(1) Medium LeetCode 372 Delete Node in the Middle of Singly Linked List C++ O(1) O(1) Easy CTCI 380 Intersec...