Agility Kata „Word Count IX“
Allow the user to enter several texts and get them analyzed. The program is terminated by entering an empty text:
$ wordcount Enter text: Mary had a little lamb Number of words: 4, unique: 4; average word length: 4.25 characters Enter text: a bb ccc dddd Number of words: 4, unique: 4; average word length: 2.5 characters Enter text: $