题目
解决:
java
import java.util.*;
/*
* public class ListNode {
* int val;
* ListNode next = null;
* public ListNode(int val) {
* this.val = val;
* }
* }
*/
public class Solution {
/**
* 代码中的类名、方法名、参数名已经指定,请勿修改,直接返回方法规定的值即可
*
*
* @param head ListNode类
* @return ListNode类
*/
public ListNode ReverseList (ListNode head) {
// write code here
ListNode end = null;
while (head != null) {
ListNode endNext = null;
if (end == null) {
end = new ListNode(head.val);
end.next = null;
} else {
endNext = new ListNode(end.val);
endNext.next = end.next;
end.next = endNext;
end.val = head.val;
}
head = head.next;
}
return end;
}
}