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dequeMystery1

Language/Type: Java Deque Deque mystery collections
Author: Conor Reisman (on 2013/01/29)

What are the contents of the Deque returned by each of the following calls? Write the deque's contents from the client perspective as they would appear by a call to the toString method. 

public static Deque mystery(String[] elements) {
    Deque<String> deque = new LinkedList<String>();
    for (int i = 0; i < elements.length; i++) {
        if (i % 3 == 0) {
            deque.addLast(elements[i]);
        } else {
            deque.addFirst(elements[i]);
        }
    }
    return deque;
}

Write the output produced by the method when passed each of the following Deques:

["fee", "fie", "foe", "fum"]
["Dana", "Jake", "Sara", "Mikey", "Janette", "Conor", "April"]
["a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m"]

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