Kata

Task

Create a function called one that accepts two params:

• a sequence
• a function

and returns true only if the function in the params returns true for exactly one (1) item in the sequence.

Example

one([1, 3, 5, 6, 99, 1, 3], bigger_than_ten) -> true
one([1, 3, 5, 6, 99, 88, 3], bigger_than_ten) -> false
one([1, 3, 5, 6, 5, 1, 3], bigger_than_ten) -> false

If you need help, here is a resource ( in Ruby ).