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Solution.java
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Solution.java
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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 Solution {
public ListNode insertionSortList(ListNode head) {
if(head == null)
return null;
ListNode current = head.next;
head.next = null;
ListNode node;
ListNode prev;
ListNode next;
while(current != null) {
next = current.next;
prev = null;
node = head;
while(node != null && current.val > node.val) {
if(prev == null)
prev = head;
else
prev = node;
node = node.next;
}
current.next = node;
if(prev == null)
head = current;
else
prev.next = current;
current = next;
}
return head;
}
}