题目描述:输入两个单调递增的链表,输出两个链表合成后的链表,当然我们需要合成后的链表满足单调不减规则。
实现语言:Java
/* public class ListNode { int val; ListNode next = null; ListNode(int val) { this.val = val; } }*/ public class Solution { public ListNode Merge(ListNode list1,ListNode list2) { if(list1==null){ return list2; }else if(list2==null){ return list1; } ListNode list=null; if(list1.val<list2.val){ list=list1; list.next=Merge(list1.next,list2); }else{ list=list2; list.next=Merge(list1,list2.next); } return list; } }
实现语言:Java
/* public class ListNode { int val; ListNode next = null; ListNode(int val) { this.val = val; } }*/ public class Solution { public ListNode Merge(ListNode list1,ListNode list2) { if(list1==null){ return list2; }else if(list2==null){ return list1; } ListNode head=new ListNode(-1); ListNode cur=head; while(list1!=null&&list2!=null){ if(list1.val<list2.val){ cur.next=list1; list1=list1.next; }else{ cur.next=list2; list2=list2.next; } cur=cur.next; } cur.next=list1!=null?list1:list2; return head.next; } }