In the Java code there is a compilation error when I simply return a null.

Solution.java:78: error: Illegal static declaration in inner class Solution.Result public static SinglyLinkedListNode insertNodeAtPosition(SinglyLinkedListNode llist, int data, int position) { ^ modifier 'static' is only allowed in constant variable declarations Solution.java:109: error: cannot find symbol SinglyLinkedListNode llist_head = insertNodeAtPosition(llist.head, data, position); ^ symbol: method insertNodeAtPosition(SinglyLinkedListNode,int,int) location: class Solution 2 errors

Hey guys is there is any problem in test case. I think there is problem in the 2 4 because for that atleast we require 3 node . and if i am correct then please correct the input as soon as possible

This is NOT a properly designed test case. Output is getting swapped when linked list starts with 2. Dont waste your time on this question.

Either the test case that the author has included is broken or they have incorrectly described the test data and how the function should work. I was only able to pass it by including some special case code to get rid of a head node with data=2 and insert a tail node with a data=2. This challenge should be deleted until the author can fix the issues.

Can somebody help me with this error in java 8 ?

Solution.java:78: error: Illegal static declaration in inner class Solution.Result public static SinglyLinkedListNode insertNodeAtPosition(SinglyLinkedListNode llist, int data, int position) { ^ modifier 'static' is only allowed in constant variable declarations Solution.java:121: error: cannot find symbol SinglyLinkedListNode llist_head = insertNodeAtPosition(llist.head, data, position); ^ symbol: method insertNodeAtPosition(SinglyLinkedListNode,int,int) location: class Solution 2 errors