# Ruby program for r() method in Vector
     
# Include matrix 
require "matrix"
     
# Initialize the vector
vec1 = Vector[1, 2, 3]
    
# Prints pythogras of the vector
puts vec1.r()

3.7416573867739413

# Ruby program for r() method in Vector
     
# Include matrix 
require "matrix"
     
# Initialize the vector
vec1 = Vector[1, 1, 1]
    
# Prints pythogras of the vector
puts vec1.r()

1.7320508075688772