带头结点。 /*** Definition for singly-linked list.* public class ListNode {* int val;* ListNode next;* ListNode(int x) { val = x; }* }*/public class Solution {public ListNode swapPairs(L
带头结点。 /*** Definition for singly-linked list.* public class ListNode {* int val;* ListNode next;* ListNode(int x) { val = x; }* }*/public class Solution {public ListNode mergeKLists
Problem 2275 Game Time Limit: 1000 mSec Memory Limit : 262144 KB Problem Description Alice and Bob is playing a game. Each of them has a number. Alice’s number is A, and Bob’s number i