CPE 103
    Recursion Lab 1
    
    For this lab you will be writing five very small recursive methods.
    You must use recursion, iteration is not allowed.
    
    1. You are to implement the five methods in the class RecursionLab according to the javadoc
    provided.  Be sure your public interface matches the
    specifications.
    
    2. The RecursionLab class has five static methods. 
    In order of difficulty to write (easy to hard), they are
    
      - arrayTotal
- arrayPosTotal
- countSpaces
- findMax
- isPalindrome
    3. Create a JUnit test class to exercise your methods and verify
    their correctness.
    
    4.  Submit the source code for your RecursionLab
    class and JUnit class.  Submit output from running your JUnit
    tests.  You do not need to write a driver of submit system
    tests.