Two-Dimensional Array in Ruby [duplicate]

Question

How to input a two-dimensional array in Ruby?How to initialize and declare the array in Ruby?

pierallard · Accepted Answer · 2013-03-20 17:49:31Z

0

You declare a 2 dimensional array with

tda = [[ 1, 2 ], [3, 4], [5, 6]]

Or you can use the Matrix class

http://www.ruby-doc.org/stdlib-1.9.3/libdoc/matrix/rdoc/Matrix.html

answered Mar 20, 2013 at 17:49

pierallard

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3 Comments

Sergio Tulentsev Over a year ago

This is called a jagged array in some languages (C#, at least), because it doesn't guarantee its rectangular "shape". At the same time, C# offers true 2d rectangular arrays. Just dumping my brain here. :)

pierallard Over a year ago

@SergioTulentsev That's why Ruby get us a beautiful Matrix class :)

Drew Over a year ago

I wouldn't necessarily call Matrix a beautiful class; it's not even mutable.

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