java非递归实现单链表反转

//链表类
class Node{
public int data;
public Node next;
public Node(int data){
this.data=data;
}

}

public Node resverList(Node head){
Node pre=null;
Node next=null;
while(head!=null){
next = head.next;
head.next=pre;
pre=head;
head=next;
}
return pre;
}