Linked list mergesort

#1

https://hack.codingblocks.com/contests/c/511/468
https://ide.codingblocks.com/s/51949
I am getting run time error whenever i try to use mergesort funcction.Please help me figure out what i am doing wrong.

#2

In midpoint function make fast=head->next. instead of fast=head.

1 Like
#3

thanks for the suggestion.Now only 1 out of 3 test cases is getting failed.