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nelsnelson/matrix.rb

Created April 21, 2011 14:36
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matrix.rb
def Matrix.columns(columns)
rows = (0 .. columns[0].size - 1).collect {
|i|
(0 .. columns.size - 1).collect {
|j|
columns[j][i]
}
}
Matrix.rows(rows, false)
end
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