Create InsertionSortList.java

Author: sudoshivesh

medium/InsertionSortList.java

@@ -0,0 +1,28 @@
+//147. Insertion Sort List
+/**
+ * Definition for singly-linked list.
+ * public class ListNode {
+ *     int val;
+ *     ListNode next;
+ *     ListNode(int x) { val = x; }
+ * }
+ */
+public class Solution {
+    public ListNode insertionSortList(ListNode head) {
+        ListNode fakeHead = new ListNode(Integer.MIN_VALUE);
+        while (head != null){
+            ListNode p = fakeHead;
+            while (p != null) {
+                if ( head.val >= p.val && (p.next == null || head.val <= p.next.val)) {
+                    ListNode next = head.next;
+                    head.next = p.next;
+                    p.next = head;
+                    head = next;
+                    break;
+                }
+                p = p.next;
+            }
+        }
+        return fakeHead.next;
+    }
+}