Add fizzbuzz and wordcount samples
Add NNP10 sample answer
まとめ
ごみすっきり
メモ
Add BTree
Add Expr
Rever unapply
Merge remote-tracking branch 'origin/master'
Add BTree Spec sample
update problem 1-6
put the code
Merge branch 'develop' of https://github.com/marevol/learning-scala into develop