Para quem gosta de ler código alheio, ver diferentes formas de abordar um problema e de comparação entre linguagens, sugiro dar uma lida no wiki Rosetta Code (http://www.rosettacode.org/wiki/Main_Page).
Descrição do wiki: “Rosetta Code is a repository for code examples that go beyond the traditional “Hello World!” example. A series of tasks are listed, and visitors to this site are asked to complete the tasks in the language of their choice. The tasks are intended to cover a variety of needs commonly found in software."