Suppose a circular queue of capacity (n – 1) elements is implemented with an array of n elements. Assume that the insertion and deletion operation are carried out using REAR and FRONT as array index variables,
Suppose a circular queue of capacity (n – 1) elements is implemented with an array of n elements. Assume that the insertion and deletion operation are carried out using REAR and FRONT as array index variables,
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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![6. Suppose a circular queue of capacity (n – 1)
elements is implemented with an array of n
elements. Assume that the insertion and
deletion operation are carried out using
REAR and FRONT as array index variables,
respectively. Initially, REAR = FRONT = 0.
The conditions to detect queue full and
queue empty are:
Full: (REAR+1) mod n ==
empty: (FRONT+1) mod n == REAR
FRONT,
Full: (REAR+1) mod n == FRONT,
empty: REAR == FRONT
Full: (FRONT+1) mod n == REAR,
empty: REAR == FRONT
Full: REAR == FRONT, empty:
(REAR+1) mod n == FRONT](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F22396a46-317f-4a5e-b0ca-076d75b45c26%2F2273c553-0bae-4cf4-a122-eb2491162124%2F32b8ilb_processed.jpeg&w=3840&q=75)
Transcribed Image Text:6. Suppose a circular queue of capacity (n – 1)
elements is implemented with an array of n
elements. Assume that the insertion and
deletion operation are carried out using
REAR and FRONT as array index variables,
respectively. Initially, REAR = FRONT = 0.
The conditions to detect queue full and
queue empty are:
Full: (REAR+1) mod n ==
empty: (FRONT+1) mod n == REAR
FRONT,
Full: (REAR+1) mod n == FRONT,
empty: REAR == FRONT
Full: (FRONT+1) mod n == REAR,
empty: REAR == FRONT
Full: REAR == FRONT, empty:
(REAR+1) mod n == FRONT
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