Matrix transposition

func transpose(matrix) {
    matrix[0].range.map {|i| matrix.map { _[i] } }
}
 
var m = [
  [1,  1,   1,   1],
  [2,  4,   8,  16],
  [3,  9,  27,  81],
  [4, 16,  64, 256],
  [5, 25, 125, 625],
]
 
transpose(m).each { |row|
    "%5d" * row.len -> printlnf(row...)
}

Output:

    1    2    3    4    5
    1    4    9   16   25
    1    8   27   64  125
    1   16   81  256  625