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matrix_initialization

🏗️ Initializing a Matrix with Nested Arrays​

Ruby’s Matrix class makes it easy to represent 2D data. To start, require the matrix library and pass nested arrays to Matrix[]. The outer array represents rows, and each inner array represents columns.

require 'matrix'

# Create a 2x3 matrix:
m = Matrix[[1, 2, 3], [4, 5, 6]]
puts m
# => Matrix[
#      [1, 2, 3],
#      [4, 5, 6]
#    ]