Ned Gulley - MATLAB Cody - MATLAB Central

Ned Gulley

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Ned Gulley submitted a Comment to Problem 44265. Practical 1, Question 2b (incomplete)

Hi Peter: If your problem is still incomplete, just leave it in draft mode. Don't publish it until it's complete.

on 20 Jul 2017

Ned Gulley submitted a Comment to Problem 2997. Kelvin to Celsius

Good point. Fixed this.

on 26 Apr 2017

Ned Gulley submitted a Comment to Problem 581. Function composition

I guess the name needed changing, but be aware that if we ever re-score old entries, everyone who passed before the name change will now fail, since they will now be calling the wrong function.

on 26 Apr 2017

Ned Gulley submitted a Comment to Solution 90576

Thanks yurenchu! I added your proposed test point to the tests.

on 15 Mar 2017

Ned Gulley submitted a Comment to Problem 43830. MPS to MPH

I made the changes.

on 22 Dec 2016

Ned Gulley submitted a Comment to Problem 43831. Kinetic Energy

In general, please provide an example solution in your problem statement.

on 20 Dec 2016

Ned Gulley submitted a Comment to Problem 43804. Rankine to Celsius Converter

Good suggestion. I made the change.

on 20 Dec 2016

Ned Gulley submitted a Comment to Problem 43886. Degrees to Radian

Hi Jared. If you're going to make problems that have approximate floating point answers (often the case with conversions), you need to allow for some variation in your test suite. ISEQUAL is not a good test in these cases. Instead, maybe use ABS(answer-correct) < tolerance.

on 20 Dec 2016

Ned Gulley submitted a Comment to Problem 43830. MPS to MPH

Hi Jared. Please specify what MPS means. I assumed it meant meters/second. I had to inspect your test suite to figure out you meant miles/second. Also, your problem title says MPH to MPS, but the actual problem is to convert MPS to MPH.

on 20 Dec 2016

Ned Gulley submitted a Comment to Problem 43676. Count the Digits in the Box

Hi Peng, and thanks for the note. I see your solutions now do quite well with all test cases! :-)

on 20 Dec 2016

Ned Gulley liked Solution 862596

on 14 Dec 2016

Ned Gulley submitted a Comment to Problem 43676. Count the Digits in the Box

Good catch James! Thanks. That was a data entry problem. Should be fixed now.

on 14 Dec 2016

Ned Gulley submitted a Comment to Problem 2265. 2048 Next Move

I would love to find a way to get people "liking" problems more often. Liking makes the author feel good about a job well done, but more importantly it points people to good problems. Sometimes we try to motivate people to like problems. This happened with the October triathlon contest (when the problem you reference was created). But it can have an unintended outcome of encouraging people to like problems that aren't that great. The results are very uneven. Bottom line: if you like a problem, please "like" it!

on 12 Dec 2016

Ned Gulley liked Solution 1055282

on 17 Nov 2016

Ned Gulley submitted a Comment to Problem 189. Sum all integers from 1 to 2^n

John D'Errico wrote up some great commentary on this problem and how to go about solving it. http://blogs.mathworks.com/community/2016/07/21/numerical-analyst-john-derrico-takes-a-stroll-through-cody/

on 21 Jul 2016

Ned Gulley submitted a Comment to Solution 61727

I believe this is the very first use of the Ans Hack in Cody. See http://blogs.mathworks.com/community/2016/06/23/the-great-ans-hack/

on 23 Jun 2016

Ned Gulley submitted a Comment to Problem 42888. Frobenius McNugget Factorization

My apologies gentlemen! I rushed this into print yesterday afternoon. Thanks for the reference Peng. I have fixed the offending answers.

on 7 Jun 2016

Ned Gulley submitted a Comment to Problem 2265. 2048 Next Move

Thanks Jan! Fixed it. That test has been firing blanks for more than a year.

on 3 Mar 2016

Ned Gulley submitted a Comment to Problem 42749. Find the nearest prime

I made a few quick edits.

on 25 Feb 2016

Ned Gulley submitted a Comment to Problem 2959. Divide by 4

Incidentally, I would delete this problem, but now it has this useful commentary on it.

on 22 Feb 2016

Ned Gulley submitted a Comment to Problem 2959. Divide by 4

I'm listening. Thanks for this discussion. I have been in contact with the prof at UAB who has his students post these problems. This particular flurry happens in October and February when the course is taught. I agree this is not an appropriate use of Cody. We'll be dealing with this by making a minimum Player Score before you can submit a problem. It'll be impossible to just show up and make a problem, having never played before. We'll have to see if that resolves the issue, but I think it's a good step.

on 22 Feb 2016

Ned Gulley submitted a Comment to Problem 58. Tic Tac Toe FTW

Brendan, Jan is right. Dealing with spam is giving us a hard time. If we set the barrier too low, we get terrible inflows of spam. If we set it too high, we annoy good people like you. Sorry about the hassle. We are working on it now.

on 19 Feb 2016

Ned Gulley submitted a Comment to Solution 824158

Thanks for the suggestion. I added "frames" to the test.

on 11 Feb 2016

Ned Gulley submitted a Comment to Problem 42708. Placing Beads Neatly in a Box

Hi Carl: All sequences are generated from successful packings. So you wouldn't get 1-1-0-1 because, as you note, it couldn't be packed successfully. In other words, this situation shouldn't come up.

on 28 Jan 2016

Ned Gulley submitted a Comment to Solution 814072

I added [2 1 1 1] as a test.

on 27 Jan 2016

Ned Gulley submitted a Comment to Problem 42708. Placing Beads Neatly in a Box

You also gave me a new test for "Is it Snaky (42705)" that knocked out the current leader.

on 25 Jan 2016

Ned Gulley submitted a Comment to Problem 42708. Placing Beads Neatly in a Box

Thanks Alfonso! Advice taken.

on 25 Jan 2016
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