Join GitHub today
GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together.
Sign up剑指offer，逆序打印链表，递归方法空指针异常 #960
Open
Comments
|
逆序打印链表 |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
public ArrayList printListFromTailToHead(ListNode listNode) {
ArrayList ret = new ArrayList<>();
if (listNode != null) {
ret.addAll(printListFromTailToHead(listNode.next));//这里listNode.next会出现空指针异常，加一个if（listNode.next) ！= null）
ret.add(listNode.val);
}
return ret;
}