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Results tagged with matrix
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user 77678
This tag is for challenges involving matrices. A matrix, also known as a 2D array, is a list of numbers arranged in a rectangle with rows and columns.
3
votes
Rotation summation
R, 69 64 bytes
function(x,a=function(y)apply(y,1,rev))x+a(x)+a(a(x))+a(a(a(x)))
Try it online!
Attempt number three at codegolf.
From 69 to 64 bytes thanks to Giuseppe!
- 201