Documentation

First checksum is the difference of the largest and smallest elements

>>> checksum1 [5,1,9,5]
8
>>> checksum1 [7,5,3]
4
>>> checksum1 [2,4,6,8]
6

Second checksum is the quotient of the only two elements that evenly divide each other.

>>> checksum2 [5,9,2,8]
4
>>> checksum2 [9,4,7,3]
3
>>> checksum2 [3,8,6,5]
2