Using Google’s Guava I can considerably simplify my implementation. I trust Google developers. Those guys generally know their handiwork. After this refactoring, I’m finally content with my implementation.
► All Potter Kata Episodes: http://goo.gl/m9E4vF
► Let’s Develop! http://letsdeveloper.com
► Don’t Miss an Episode: http://goo.gl/whzDi1
► CodingDojo: http://codingdojo.org/cgi-bin/index.pl?KataPotter
► The Code: https://github.com/letsdeveloper/Lets-Develop-Code-Kata
«Code Kata»
Code Kata are small and simple programming problems that we execute to practice software engineering methods, like TDD or pair programming. The term is derived from Japanese martial arts.
«Other Series»
► Let’s Develop Conway’s Game of Life: http://goo.gl/xc59GX
► Let’s Refactor MovieRental: http://goo.gl/f7Yf21
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