Even and Odd Number Listing Using Hashes in Ruby

Write a program uses hashes that will check and list down the series of even and odd numbers from 1 to 12 to the screen using Ruby programming language.

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Sample Program Output

Program Listing

# even_odd.rb

# Author   : Jake Rodriguez Pomperada,BSCS,MAED-IT

# Date     : July 17, 2019   Tuesday   1:32 PM

# Address  : Bacolod City, Negros Occidental

# Tools    : Eclipse IDE and Ruby Version 2.6.3

# Location : Bacolod City, Negros Occidental  

# Website  : http://www.jakerpomperada.com

# Emails   : jakerpomperada@gmail.com and jakerpomperada@yahoo.com

  print "\n"

  print "\t===== Even and Odd Number Listing Using Hashes ====="

  print "\n\n"

val_num  = {   

    1 => 1,2 =>2,3 =>3,4 =>4,

    5 => 5,6 =>6,7 =>7,8 =>8,

    9 => 9,10 =>10,11 => 11,12 => 12   

    }   

 print("\tList of Even Numbers")

 print("\n\n")

 print("\t")

val_num.each do |key, value|

  if (key % 2 == 0)

    print " #{key} " 

   end    

end

 print("\n\n")

 print("\tList of ODD Numbers")

 print("\n\n")

print("\t")

 val_num.each do |key, value|

   if (key % 2 != 0)

     print " #{key} " 

    end    

 end

 print "\n\n";

 print "\tEnd of Program"