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题解 | 链表中环的入口结点

import java.util.*; /* public class ListNode { int val; ListNode next = null; ListNode(int val) { this.val = val; } } */ pub...

2026-01-31

0 42

题解 | 判断链表中是否有环

import java.util.*; /** * Definition for singly-linked list. * class ListNode { * int val; * ListNode next; * ListNode(int x) { * ...

2026-01-31

0 39

题解 | 合并两个排序的链表

import java.util.*; /* * public class ListNode { * int val; * ListNode next = null; * public ListNode(int val) { * this.val = val; * ...

2026-01-31

0 26

题解 | 合并两个排序的链表

import java.util.*; /* * public class ListNode { * int val; * ListNode next = null; * public ListNode(int val) { * this.val = val; * ...

2026-01-30

0 62

题解 | 链表中的节点每k个一组翻转

import java.util.*; /* * public class ListNode { * int val; * ListNode next = null; * public ListNode(int val) { * this.val = val; * ...

2026-01-30

0 43

题解 | 链表内指定区间反转

import java.util.*; /* * public class ListNode { * int val; * ListNode next = null; * public ListNode(int val) { * this.val = val; * ...

2026-01-30

0 39

题解 | 反转链表

import java.util.*; /* * public class ListNode { * int val; * ListNode next = null; * public ListNode(int val) { * this.val = val; * ...

2026-01-30

0 47