They claim find substring question as their own art? I was asked this in the early 2000s and i am sure i asked this question to candidates in the mids 2000s.

They claim find substring question as their own art? I was asked this in the early 2000s and i am sure i asked this question to candidates in the mids 2000s. Someone should find proof of any early example they asked a candidate and DMCA hacker ranks cloud provider.