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Trace through the state of the queue q in the following code fragment in the main method.                           Queue q = new ArrayDeque( );              q.add(-6);              q.add(23);              q.offer(19);              q.poll( );              Integer  t  =  q.peek( );              q.add( t  +  16);              q.remove( );              q.add(q.poll( ));              System.out.println ("q has " + q);              System.out.println ("t has " + t);

Trace through the state of the queue q in the following code fragment in the main method.                           Queue q = new ArrayDeque( );              q.add(-6);              q.add(23);              q.offer(19);              q.poll( );              Integer  t  =  q.peek( );              q.add( t  +  16);              q.remove( );              q.add(q.poll( ));              System.out.println ("q has " + q);              System.out.println ("t has " + t);

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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  1. Trace through the state of the queue q in the following code fragment in the main method.

             

            Queue <Integer> q = new ArrayDeque<Integer>( );

             q.add(-6);

             q.add(23);

             q.offer(19);

             q.poll( );

             Integer  t  =  q.peek( );

             q.add( t  +  16);

             q.remove( );

             q.add(q.poll( ));

             System.out.println ("q has " + q);

             System.out.println ("t has " + t);

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