Week08 作业

public ListNode findNode(ListNode list1, ListNode list2) {
    if (list1 == null || list2 == null) {
            return null;
    }
    ListNode temp1 = list1;
    ListNode temp2 = list2;
    while (temp1 != temp2) {
      if (l1.next != null) {
				temp1 = temp1.next;
      } else {
				temp1 = list2;
			}
      
      if (temp2.next != null) {
				temp2 = temp2.next;
			} else {
				temp2 = list1;
			}
		}
		return temp1;    
}