# Ruby program for column_vectors() method in Matrix
   
# Include matrix 
require "matrix"
   
# Initialize a matrix 
mat1 =  Matrix[[1, 21], [31, 18]]       
   
# prints the columns
puts  mat1.column_vectors

Vector[1, 31]
Vector[21, 18]

# Ruby program for column_vectors() method in Matrix
   
# Include matrix 
require "matrix"
   
# Initialize a matrix 
mat1 =  Matrix[[13, 1, 5], [12, 1, 5], [11, 2, 5]]   
   
# prints the columns
puts  mat1.column_vectors

Vector[13, 12, 11]
Vector[1, 1, 2]
Vector[5, 5, 5]