Problem 2692. design a magic matrix without using the command magic.

Created by Anupam Agarwal

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95 Solutions
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Last Solution submitted on Dec 28, 2020

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James on 26 Nov 2014

Please correct the test suite so there are brackets around your y_correct. Adding a couple of other magic squares (5 and 6) would also help.

Ned Gulley on 26 Nov 2014

Hi Anumpam: Thanks for the problem. You need to fix the test suite as James says. Also, since you haven't specified what order you want the numbers in, you should probably check to make sure the matrix has magic properties (rows add to the same number, etc.) rather than testing that it matches exactly one matrix. There are lots of magic 4-by-4 matrices.

Alfonso Nieto-Castanon on 24 Jan 2015

Hi Anupam, could you please correct this testsuite? (just change the line that reads "y_correct = 16 3 2 13;5 10 11 8;9 6 7 12;4 15 14 1" to read instead "y_correct = [16 3 2 13;5 10 11 8;9 6 7 12;4 15 14 1]")

Anupam Agarwal on 27 Jan 2015

I have changed as Mr. Alfonso says... but still problem exists...

Alfonso Nieto-Castanon on 27 Jan 2015

The testsuite does not appear to be changed at all. Click on 'Edit' to edit this problem, then go to textbox titled 'Test Suite', add the brackets there to the "y_correct = ..." line, then click on the 'Save' button. Ideally you would also try out your own solution to this problem (in the textbox titled 'Reference Solution') and click on the 'Test reference solution' button to make sure that everything is working as expected...

Anupam Agarwal on 28 Jan 2015

yeah... now the prob is solved... thanks to all ... specially to mr. alfonso

Rafael S.T. Vieira on 30 Aug 2020

The magic square at the test suite is not the same as the output of the command magic. If there is a specific method for generating magic squares that the problem requires, it should be stated. Or the author could just verify if the returned matrix is indeed a magic square.

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Problem 2692. design a magic matrix without using the command magic.

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Problem 2692. design a magic matrix without using the command magic.

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