7 kyu
link to kata
my solution
Haskell has some useful functions for dealing with lists:
$ ghci
GHCi, version 7.6.3: http://www.haskell.org/ghc/ :? for help
λ head [1,2,3,4,5]
1
λ tail [1,2,3,4,5]
[2,3,4,5]
λ init [1,2,3,4,5]
[1,2,3,4]
λ last [1,2,3,4,5]
5
Your job is to implement these functions in your given language. Make sure it doesn't edit the array; that would cause problems! Here's a cheat sheet:
| HEAD | <----------- TAIL ------------> |
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
| <----------- INIT ------------> | LAST |
head [x] = x
tail [x] = []
init [x] = []
last [x] = x
Here's how I expect the functions to be called in your language:
head([1,2,3,4,5]); => 1
tail([1,2,3,4,5]); => [2,3,4,5]