InterviewBit Problems   Remove Duplicates from Sorted List II : Unsolved

About the Remove Duplicates from Sorted List II : Unsolved category (1)
Go through this (1)
Linked list Duplicates question (2)
Whats wrong with code?Need Help (1)
Code works fine in my system but fails here (1)
My Solution Worked on LeetCode But Fails the test case here! (4)
Failed test case for right result set (6)
This is giving runtime error of some sorts, can anyone tell why? (2)
Checking of the logic (1)
Can someone tell me where I am wrong, It's written in c++ (2)
Broken checking (2)
Wrong answer acceptance (1)
Segmentation Fault even though all NULL checks are in place (2)
Code getting segmentation fault (2)
Can any let me know why this code isn't working (1)
Test cases have wrong results (1)
All the numbers are non negative? (3)
Please be specific what to return in cases like 1->1 (5)