#66
Greatest Common Divisor
| Difficulty: | Easy |
| Topics: |
Given two integers, write a function which
returns the greatest common divisor.
 | (= (__ 2 4) 2) |
| (= (__ 10 5) 5) |
| (= (__ 5 7) 1) |
| (= (__ 1023 858) 33) |