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Chapter 7 · Data Structure and AlgorithmPractice
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CONCEPT PRACTICE

Queue first-in first-out order

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2023 Spring · Morning · Q8

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Q8. The operations for a queue are defined as below. ENQ n: This operation appends data n to the queue. DEQ: This operation removes data from the queue. On an empty queue, the operations ENQ 1, ENQ 2, ENQ 3, DEQ, ENQ 4, ENQ 5, DEQ, ENQ 6, DEQ, DEQ are performed. After that, when DEQ is performed, what is the value that is removed?

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Source: 2023S_FE_AM_Questions.pdf, PDF page 5–6. ID: 2023S-AM-Q008. Explanation written for this textbook.

Original question · Q8
Q8. The operations for a queue are defined as below. ENQ n: This operation appends data n to the queue. DEQ: This operation removes data from the queue. On an empty queue, the operations ENQ 1, ENQ 2, ENQ 3, DEQ, ENQ 4, ENQ 5, DEQ, ENQ 6, DEQ, DEQ are performed. After that, when DEQ is performed, what is the value that is removed?

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