is-sorted.js

/***********************************************************************
Write a recursive solution called `isSorted` to determine if the input array
is sorted in ascending order.

Examples:

isSorted([1, 2, 3, 4, 5]); // true
isSorted([1, 2, 4, 3, 5]); // false
isSorted([2, 4, 6, 7, 8]); // true
isSorted([5, 4, 3, 2, 1]); // false
***********************************************************************/