Leap Year Checker Using Hashes in Ruby

Write a program using hashes to check and determine which of the following years 
1991,1992,1993,1994,1995,1996,1998,1999,2000,2001,2002,2003,2004,2008,2012,
2016,2020 and 2024 are leap years and not a leap years and display the results
on the screen.

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Program Listing

# leap_year.rb

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

# Date     : July 18, 2019   Thursday  4:58 AM

# 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===== Leap Year Checker Using Hashes ====="

  print "\n\n"

year_list  = {   

    1 =>1991,2=>1992,3=>1993,4=>1994,

    5 => 1995,6 =>1996,7=>1998,8 =>1999,

    9 =>2000,10 =>2001,11=>2002,12 =>2003,

    13 => 2004,14 =>2008,15=>2012,16=>20016,

    17=>2020,18=>2024   

    }   

 print("\tList of Leap Years")

 print("\n\n")

 print("\t")

year_list.each do |key, value|

  if ((value % 4 == 0) && (value % 100 != 0) || (value % 400 == 0))

    print " #{value} " 

   end    

end

 print("\n\n")

 

 print("\tList of Not a Leap Years")

 print("\n\n")

 print("\t")

 year_list.each do |key, value|

   if ((value % 4 != 0)) 

     print " #{value} " 

    end    

 end

 print "\n\n";

 print "\tEnd of Program"