3153. Sum of Digit Differences of All Pairs (Leetcode Medium)

Larry solves and analyzes this Leetcode problem as both an interviewer and an interviewee. This is a live recording of a real engineer solving a problem live - no cuts or edits!
Problem: leetcode.com/problems/sum-of-...
Twitch: / larryny
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#leetcode #coding #programming

[@Algorithmist]

Did you get all the digit differences?

[@afsarzan]

Larry please guide how to start solving problems

[@phantomhawk489]

larry, i took around 1 hr to come up with the solution am i dumb or u a super human??

[@redfinance3403]

I think super human is a bit of a stretch based off programming skill lol. But he is a genius and you’re not dumb. There’s plenty of people who aren’t that smart that can solve such problems very quickly after many hours of practice. I’m not there yet but I can say I solved this in 30 mins when last year I couldn’t have solved any problem close to this difficulty. Also just because X person takes Y hours to get a certain subject and person Z takes less than Y hours to get the subject, they are smarter but person X shouldn’t give up because they can still get to a very good level. So, basically, don’t compare yourself to others

[@Algorithmist]

a lot of it is just practice - you can definitely get better, so no need to compare to other people!