Solutions to Recursive Exercises
Range - return all the numbers between and including the start and end numbers in an array
Sum - iterative and recursive versions of taking the sum of an array
Exponentiation - return the result of a base raised to a power using recursion exp2 is a more efficient version
Deep Dup - make a deep copy of an array of arrays
Fibonacci - return an array of the first n Fibonacci numbers using recursion
Binary Search - find the target element in the sorted array using recursion
Make Change - Recursively determine the fewest coins that can make the given amount of change using the given set of coins
Merge Sort - implement the merge sort algorithm recursively
Subsets - return all the subsets of an array