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Researcher and Director of Data Science at PatientsLikeMe.com; MATLAB evangelist.

Professional Interests: Predictive modeling, statistics

Professional Interests

Predictive modeling, statistics

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the cyclist submitted a Comment to Solution 703651

There is a nifty trick for reducing what seems like the shortest possible solution. I don't really want to just state the trick, as it is fun to learn or discover on your own.
If you can't figure it out, I suggest that you submit a simple problem to Cody, and look at the solutions. (They will all be viewable to you, as the problem submitter.) Someone will use the trick, almost certainly.

on 21 Jul 2015

the cyclist submitted a Comment to Solution 563857

Although MATLAB does create a 2x2 matrix as an output from magic(2), that output is not a magic square.

on 27 Jan 2015

the cyclist submitted a Comment to Problem 149. Is my wife right?

Sneha, do you really want to tell your wife to get 'out'?

on 31 Oct 2014

the cyclist submitted Solution 489538 to Problem 2527. Cull vector elements that contain a specified digit

on 22 Aug 2014

the cyclist submitted Problem 2527. Cull vector elements that contain a specified digit to Community

on 22 Aug 2014

the cyclist submitted a Comment to Solution 480291

I added another test to the suite that invalidated this cheesy solution.

on 30 Jul 2014

the cyclist submitted a Comment to Solution 406838

New test suite invalidates this solution.

on 20 Feb 2014

the cyclist submitted a Comment to Problem 2202. Flip the bit

Added this check. (I messed it up a bit the first time I tried to do it, so sorry for some interim weirdness.)

on 20 Feb 2014

the cyclist submitted Solution 403887 to Problem 1666. Multielement indexing of a row array

on 13 Feb 2014

the cyclist submitted Solution 403886 to Problem 1666. Multielement indexing of a row array

on 13 Feb 2014

the cyclist submitted Solution 403885 to Problem 1664. Lightning strike distance: Writing a function

on 13 Feb 2014

the cyclist submitted Solution 403884 to Problem 1663. Pizza value using expression with parentheses

on 13 Feb 2014

the cyclist submitted Solution 403544 to Problem 1665. Create a row array using double colon operator

on 13 Feb 2014

the cyclist submitted a Comment to Problem 320. Maintain shape of logical-index mask

Good suggestion. I've added a couple more tests to the suite, including one that has three columns in the logical mask.

on 13 Feb 2014

the cyclist submitted Solution 395430 to Problem 1659. Fahrenheit to Celsius using multiple statements

on 2 Feb 2014

the cyclist submitted a Comment to Solution 363762

http://www.mathworks.com/help/matlab/ref/assert.html

on 4 Dec 2013

the cyclist submitted Solution 359357 to Problem 1658. Simple equation: Annual salary

on 26 Nov 2013

the cyclist submitted a Comment to Problem 160. So many choices

@Sumit, you are probably using a function from a toolbox (e.g. statistics toolbox) that is not available to Cody.

on 11 Sep 2013

the cyclist submitted Solution 309290 to Problem 157. The Hitchhiker's Guide to MATLAB

on 22 Aug 2013

the cyclist submitted Solution 290757 to Problem 1755. Fix the last element of a cell array

on 27 Jul 2013

the cyclist submitted Solution 269876 to Problem 1035. Generate a vector like 1,2,2,3,3,3,4,4,4,4

on 30 Jun 2013

the cyclist submitted Solution 269844 to Problem 1035. Generate a vector like 1,2,2,3,3,3,4,4,4,4

on 30 Jun 2013

the cyclist submitted Solution 269839 to Problem 16. Return the largest number that is adjacent to a zero

on 30 Jun 2013

the cyclist submitted Solution 257747 to Problem 157. The Hitchhiker's Guide to MATLAB

on 7 Jun 2013

the cyclist submitted a Comment to Solution 203610

I added a test case to nullify this "solution".

on 25 May 2013

the cyclist submitted a Comment to Solution 214423

This solution only tests for divisibility by 9, not whether the number is a Kaprekar number.

on 9 Mar 2013

the cyclist submitted a Comment to Solution 27245

Added to test suite to eliminate this "solution".

on 9 Mar 2013

the cyclist submitted a Comment to Problem 151. Magic!

The MATLAB command magic(2), although it does produce output, is not a magic square, according to the definition. (There is no 2x2 magic square.)

on 8 Mar 2013

the cyclist submitted a Comment to Problem 151. Magic!

I was not notified about some of the older comments, so was unaware of some of the weaknesses of the test suite, and the "gamed" solutions. I have substantially improved the test suite.

on 8 Mar 2013

the cyclist submitted a Comment to Problem 162. High school cafeteria

I somehow Alfonso's older comment until I saw Tom's newer one.
Alfonso: I've added a non-sorted test sample, and had the problem rescored.
Tom: 1 is neither prime nor composite. I've added instructions on how to handle that.

on 27 Feb 2013

the cyclist submitted Solution 190535 to Problem 760. Duplicate each element of a vector.

on 13 Jan 2013