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Ruby | Matrix normal? function

  • Last Updated : 07 Jan, 2020

The normal?() is an inbuilt method in Ruby returns a boolean value. It returns true if it is a normal matrix, else it returns false. It returns error if anything other than square matrix is used.

Syntax: mat1.normal?()

Parameters: The function needs the matrix to be checked for square or not.

Return Value: It returns true if it is a square matrix, else it returns false.

Example 1:




#Ruby program for normal ? () method in Matrix
  
#Include matrix
require "matrix"
  
#Initialize a matrix
    mat1
    = Matrix[[ 1, 21 ], [ 31, 18 ]]
  
#Prints if normal ? or not
      puts mat1.normal
    ? ()

Output:

false

Example 2:




#Ruby program for normal ? () method in Matrix
  
#Include matrix
require "matrix"
  
#Initialize a matrix
    mat1
    = Matrix[[ 2, 1, 1 ], [ 1, 2, 1 ], [ 1, 1, 2 ]]
  
#Prints if normal ? or not
      puts mat1.normal
    ? ()

Output:

true

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