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CSCI203 Data Structures And Algorithm Assignment, SIM, Singapore: Your Task For This Assignment Is To Investigate Some Of The Properties Of Queues
University SIM Global Education (SIM)
Subject CSCI203 Data Structures And Algorithm Assignment
Posted on: 12th Feb 2024

CSCI203 Data Structures And Algorithm Assignment, SIM, Singapore: Your Task For This Assignment Is To Investigate Some Of The Properties Of Queues

Part B:

Your task for this assignment is to investigate some of the properties of queues.

You should write a Java, C++, or Phyton program which simulates the queuing system in an email server.

Queues are commonly used in network systems. For example, e-mail is placed in queues while it is waiting to be sent and after it arrives at the recipient’s mailbox. A problem occurs, however, if the outgoing mail processor cannot send one or more of the messages in the queue. For example, a message might not be sent because the recipient’s system is not available.

Write an e-mail simulator that processes mail at an average of 20 messages per minute. As messages are received, they are placed in a queue. For the simulation, assume that the messages arrive at an average rate of 30 messages per minute. Remember, the messages must arrive randomly, so you will need to use a random number generator to determine when messages are received.

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Each minute, you can dequeue up to 20 messages and send them. Assume that up to 25% of the messages in the queue cannot be sent in any processing cycle. Again, you will need to use a random number to determine whether a given message can be sent. If it cannot be sent, put it back at the end of the queue or enqueue it.

Run the simulator for 15 minutes, tracking the number of times each message
had to be requeued. At the end of the simulation, print the statistics that show:
1 The total messages processed.
2 The average arrival rate, that is, the average number of messages arriving
per minute.
3 The average number of messages sent per minute.
4 The average number of messages in the queue in a minute.
5 The number of messages sent on the first attempt, the number of messages
sent on the second attempt, and so forth.
6 The average number of times messages had to be requeued (do not include
the messages sent the first time in this average.)

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