Positive and Negative Numbers Using Hashes in Ruby

Write a program uses hashes that will check and list down the series of positive and negative numbers from 1 to 12 to the screen.

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Sample Program Output

Program Listing

positive_negative.rb

# positive_negative.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===== Positive and Negative Numbers 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 Postive Numbers")

 print("\n\n")

 print("\t")

val_num.each do |key, value|

  if (value >=0)

    print " #{value} " 

   end    

end

 print("\n\n")

 print("\tList of Negative Numbers")

 print("\n\n")

print("\t")

 val_num.each do |key, value|

   if (value < 0)

     print " #{value} " 

    end    

 end

 print "\n\n";

 print "\tEnd of Program"