For the Questions Below, Consider the Following Operations on a Queue

question 39

Multiple Choice

For the questions below, consider the following operations on a Queue data structure that stores int values.
Queue q = new Queue( ) ;
q.enqueue(3) ;
q.enqueue(5) ;
q.enqueue(9) ;
System.out.println(q.dequeue( ) ) ; // d1
q.enqueue(2) ;
q.enqueue(4) ;
System.out.println(q.dequeue( ) ) ; // d2
System.out.println(q.dequeue( ) ) ; // d3
q.enqueue(1) ;
q.enqueue(8) ;
-If we replace the System.out.println statements (denoted in comments as d1, d2 and d3) with the statement q.enqueue(q.dequeue( ) ) ; q would contain which order of int values after all instructions have executed?

• A) 3, 5, 9, 2, 4, 1, 8
• B) 3, 5, 9, 1, 8, 2, 4
• C) 5, 9, 2, 4, 1, 8, 3
• D) 3, 2, 4, 5, 9, 1, 8
• E) 2, 4, 1, 8, 3, 5, 9

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