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38 lines (38 loc) · 895 Bytes
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MergeTwoSortedLists.java
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38 lines (38 loc) · 895 Bytes
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/**
* Definition for singly-linked list.
* public class ListNode {
* int val;
* ListNode next;
* ListNode(int x) {
* val = x;
* next = null;
* }
* }
*/
public class MergeTwoSortedLists {
public ListNode mergeTwoLists(ListNode l1, ListNode l2) {
ListNode ans = new ListNode(-1);
ListNode tmp = ans;
while(l1 != null && l2 != null){
if(l1.val < l2.val){
tmp.next = l1;
l1 = l1.next;
}else{
tmp.next = l2;
l2 = l2.next;
}
tmp = tmp.next;
}
while(l1 != null){
tmp.next = l1;
l1 = l1.next;
tmp = tmp.next;
}
while(l2 != null){
tmp.next = l2;
l2 = l2.next;
tmp = tmp.next;
}
return ans.next;
}
}