Ruby | Matrix diagonal() function

The diagonal is an inbuilt method in Ruby returns a matrix with diagonal elements as the given values.

Syntax: mat1.diagonal(val1, val2, val3 …)

Parameters: The function accepts the values which are to be placed in the diagonal of the matrix.

Return Value: It returns matrix with values val1, val2, val3, and others placed in diagonals.

Example 1:

# Ruby program for diagonal() method in Matrix

# Include matrix
require "matrix"

# Initialize a matrix
# using diagonal method
mat1 = Matrix.diagonal(1, 6, 9)

# Print the matrix
puts mat1

Output:

Matrix[[1, 0, 0], [0, 6, 0], [0, 0, 9]]

Example 2:

# Ruby program for diagonal() method in Matrix

# Include matrix
require "matrix"

# Initialize a matrix
# using diagonal method
mat1 = Matrix.diagonal(2, 7)

# Print the matrix
puts mat1

Output:

Matrix[[2, 0], [0, 7]]