Problem 1162. Happy 2013...

Created by James

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Happy 2013, everyone! An interesting tidbit about 2013 is that it is the first year since 1987 to contain four different digits. Write a MATLAB function that, when given a start year and an end year, will tell you how many of the years between these two values have four unique digits. You may assume that the years will only have four digits, and that the start year will be smaller than the end year.

For example: if start=1000 and finish=1023, your output should be 1, as 1023 is the only year in that range that has four unique digits.

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212 Solutions
102 Solvers

Last Solution submitted on Jan 10, 2020

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3 Comments

3 Comments

Aurelien Queffurust on 3 Jan 2013

we learn everyday something with CODY!

Chris Cleveland on 8 Aug 2017

This problem needs to be fixed!!!!!!

James on 24 May 2018

Now that I've noticed people were having issues with this problem (thanks it it being added to the "Magic Numbers II" group) I've fixed the test suite. Cody changed the way their test suites were read in sometime in October, 2016 judging from when things went south. Those changes messed up this problem. I manually rescored a couple of solutions to confirm that the fixes worked, and they did. The problem is now functional.

Solution Comments

Solution 1114165

2 Comments

2 Comments

Daniel Pereira on 2 Feb 2017

I think this problem is broken, it keeps saying the 'solutionTest' thing, and when you make it global, of course you cannot get a correct value.

Jan Orwat on 2 Feb 2017

This is a combination of a known issue and a change in a way submissions are handled now. 1st, if you compare the test suite before, and after submission, you will notice first test disappeared. This happens when first test doesn't begin with section separator (on problem creation/editon page). It disappears, but the code is still executed. This leads us to 2nd. Submissions, from the test suite perspective, were stored in current directory. Now it's a subdirectory "submission". First test doesn't "Clean user's function from some known jailbreaking mechanisms" as intended. Moreover, it deletes "solutionTest.m" which seems to be necessary to perform tests. Btw. in this specific submission there is different error not because it was made global, but "global varname=something" is a syntax error, which is checked first and the test suite is not executed.

Solution 1114152

1 Comment

1 Comment

Daniel Pereira on 2 Feb 2017

What is happening here?

It says:
"Error using builtin Undefined function or variable 'solutionTest'."

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Problem 1162. Happy 2013...

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Problem 1162. Happy 2013...

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