Problem 4 追加します！
Merge pull request #3 from minddnim/master

99 questions/1 to 10
Problem 4 追加します！

（やんやん言われてたのを修正．）
Merge branch 'master' of https://github.com/y-tsutsu/H99 into y-tsutsu-master

Conflicts:
	Problem_1to10.hs
add Problem No.
add Problem6
add Problem7
Merge pull request #6 from y-tsutsu/master

Please　pull　Problem7
Merge branch 'master' of https://github.com/papamitra/H99

Conflicts:
	Problem_1to10.hs
5 Problem 5

(*) Reverse a list.

8 Problem 8
(**) Eliminate consecutive duplicates of list elements.
5 Problem 5

(*) Reverse a list.

8 Problem 8
(**) Eliminate consecutive duplicates of list elements.