InterviewBit Problems   Sort Binary Linked List : Unsolved

About the Sort Binary Linked List : Unsolved category (1)
Better than soln provided | Time complexity O(N) | space complexity O(1) | will work with associated data (1)
Simple Two pointer C++ Solution (1)
Sorting Binaray Linked List (1)
Out of box approach - No sorting needed for this (2)
Weak test cases (All 0's) (1)
Sort binary link list (1)
Single Iteration/Traversal of Linked List (1)
It says 'didn't complete in the allocated time limit'. I have used only one while loop (4)
For everyone looking for count sol c++ (4)
Can Anyone Tell me Whats wrong with this code in Java (3)