Matrix transposition

# title: Matrix transposition
# source: https://rosettacode.org/wiki/Matrix_transposition
# category: Rosetta Code
# difficulty: Easy
# summary: Transpose a matrix by swapping its rows and columns.
# tags: popular, math, arrays, nested-loops
# vibe: 0.2

def transpose(matrix)
  rows = matrix.size
  cols = matrix[0].size
  result = []
  c = 0

  while c < cols
    row = []
    r = 0
    while r < rows
      row = row.push(matrix[r][c])
      r = r + 1
    end
    result = result.push(row)
    c = c + 1
  end

  result
end

def run
  {
    square: transpose([[1, 2, 3], [4, 5, 6], [7, 8, 9]]),
    rectangular: transpose([[1, 2], [3, 4], [5, 6]])
  }
end