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A matrix is a list of numbers arranged in a rectangle with rows and columns. In programming, it is also known as a 2D array. Use this tag if your challenge is about manipulating matrices.

2
votes
Japt, 25 24 bytes Hardly elegant, but gets the job done. Working with 2D data in Japt is tricky. ;N×Ç<U©Ap[] A®Ê<V©Zp°T A ; // Set alternative default vars where A is an empt …
answered Apr 24 '18 by Nit
6
votes
Japt -Q, 15 13 bytes I'm sure there's a shorter way, but I liked this approach. ##ü80ì3 mÉ ò ##ü80 // Take 14425280 ì3 // and turn it into an array of base-3 numbers. mÉ …
answered May 14 '18 by Nit
5
votes
Japt, size 9 4 (11 bytes) UªSê êSªU Try it online! Takes one-dimensional input, checks if it is a palindrome. If you want, you can fill the two empty lines for some ascii art. The old two-dimens …
answered Jul 16 '18 by Nit