This gem is developed by Harisankar @ http://rubykitchen.in to speed up palindrome computation.

/*

• ---

• "THE BEER-WARE LICENSE" (Revision 42):
• hsps [at] rubykitchen.org wrote this file. As long as you retain this notice you
• can do whatever you want with this stuff. If we meet some day, and you think
• this stuff is worth it, you can buy me a beer in return Harisankar P S

• ---

*/