Location: London

Good morning leetcoders from hell.

Just done with my facebook phone .It wasn't a great experience and even worse.I can't say that i passed.

Got first problem:

Question 1:
https://leetcode.com/problems/merge-k-sorted-lists/

I quickly discussed my approach and written the code.

Question 2:
Merge K sorted circular lists - Not present on LeetCode

I have written the code but he came up with some list containing rows of duplicates like {4,4,4,4}.
My code didn't passed.I asked him to identify the bug but he said no even after insisting.