// isOrdered //

// return true if the queue contents are in increasing order (back to front)

// Queue may be empty ; in which case the function should return true

// You must solve this USING RECURSION; you will need to use a helper function

// You may not use:

// any other Java classes, algorithms,

// the toString instance method

// You may not alter the invoking queue

//

// here are some conceptual examples ( they also mirror what your linked lists will look like)

// the back is on the left and the front is on the right.

// Example 1. A B C D E F G H I J --> answer true ,

// Example 2. C B A --> answer false

// Example 3. C --> answer true

//