-
Notifications
You must be signed in to change notification settings - Fork 0
/
bottom.java
66 lines (52 loc) · 1.31 KB
/
bottom.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
class ListNode
{
int data;
ListNode next;
ListNode bottom;
ListNode(int d)
{
data = d;
next = null;
bottom = null;
}
}
public class bottom {
ListNode flatten(ListNode root)
{
return mergeSort(root);
}
static ListNode mergeSort(ListNode head){
if(head==null|| head.next==null)return head;
ListNode aagewlahead=mergeSort(head.next);
return merge(head,aagewlahead);
}
static ListNode merge(ListNode head,ListNode aagewlahead){
if(head==null){
return aagewlahead;
}else if(aagewlahead==null){
return head;
}
ListNode l=head;
ListNode r=aagewlahead;
ListNode dummy=new ListNode(-1);
ListNode temp=dummy;
while(l!=null && r!=null){
if(l.data<r.data){
temp.bottom=l;
temp=temp.bottom;
l=l.next;
}else{
temp.bottom=r;
temp=temp.bottom;
r=r.next;
}
}
if(l!=null){
temp.bottom=l;
}
if(r!=null)temp.bottom=r;
return dummy.bottom;
};
public static void main(String[] args) {
}
}