Problem 45487. Check Digit - 02

Created by Asif Newaz

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Solution Stats

49 Solutions
15 Solvers

Last Solution submitted on Mar 21, 2023

Last 200 Solutions

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1 Comment

1 Comment

bainhome on 2 May 2020

I saw you optimize it again, Binbin have to work harder...
cospi is some move indeed.Inspired by that, I used it in generating a checkboard matrix(cody problem 4).

Solution Comments

Solution 8329665

1 Comment

1 Comment

Dyuman Joshi on 13 May 2022

ISBN 10 and 13 are the only valid ones. TIL.

Solution 2250310

1 Comment

1 Comment

Yuan on 2 May 2020

wrote this just to see the leading solution. If you are looking for a good solution to avoid multiple if-else or try-catch, please redirect yourself to Solution 2249978.

Solution 2247384

3 Comments

3 Comments

bainhome on 1 May 2020

Excellent work! It's good to see you back.

Yuan on 2 May 2020

well this is triggered and inspired by the blog post of you and binbin!

bainhome on 2 May 2020

haha, know this: after you post this solution, Binbin took a while to figure out how to beat this sol in size
and he actually did it.:)

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Problem 45487. Check Digit - 02

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Problem 45487. Check Digit - 02

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Last 200 Solutions

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