
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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3. Write a program to implement a queue and perform the following operations on a queue: enqueue(800), enqueue(100), dequeue( ), enqueue(300), enqueue(500), dequeue( ), dequeue( ).
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- Please written by computer source In java please!arrow_forwardImplement a Queue using a vector or the STD ::queue:: class Note the difference in what it takes to implement using a char[] array vs a vector or the STD ::queue:: class The user will input a string and the program will return the string with each letter in the string duplicated. Displaying correct Queue implementation. Utilize the conventional methods as needed. Sample Execution Please input String: happy Program will produce the output string. Only use the enqueue(), dequeue(), empty(), etc hhaappyyarrow_forwardConsider the following statements for a String queue: Queue Q = new Queue(); String x = "", y = ""; Show what is output by the following segment of code. x = "g"; y = "e"; Q.enqueue(x + "8"); Q.enqueue(y); x = Q.front( ); Q.dequeue( ); Q.enqueue(y + "5"); Q.enqueue(x); y = Q.front(); Q.enqueue(y + "9"); System.out.println(“Queue Elements: “ + Q);arrow_forward
- Java adt Draw the contents of the queue after the following statements execute. Clearly label the front and back of the queue. QueueInterface bankLine = new LinkedQueue<>(); bankLine .enqueue("John"); bankLine .enqueue("Matthew"); String next = bankLine .dequeue(); next = bankLine .dequeue(); bankLine .enqueue("Drew"); bankLine .enqueue("Heather"); next = bankLine .dequeue(); bankLine .enqueue("David"); next = bankLine .dequeue();arrow_forwardb. Write out the order of elements that are contained in a queue after the following operations are performed. myQueue.enqueue(new Integer(16)); myQueue.enqueue(new Integer(12)); Integer num1 = myQueue.dequeue(); myQueue.enqueue(new Integer(6)); myQueue.enqueue(new Integer(8)); myQueue.enqueue(new Integer(30)); myQueue.enqueue(new Integer(24)); myQueue.enqueue(new Integer(18)); myQueue.dequeue(); myQueue.dequeue(); myQueue.dequeue(); myQueue.enqueue(new Integer(38); Show how step by step process of arriving at your answer.arrow_forwardA(n) a. Array b. Stack C. Queue d. Treearrow_forward
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