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GATE | GATE CS 2012 | Question 33
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
(A)
Full: (REAR+1) mod n == FRONT, empty: REAR == FRONT
(B)
Full: (REAR+1) mod n == FRONT, empty: (FRONT+1) mod n == REAR
(C)
Full: REAR == FRONT, empty: (REAR+1) mod n == FRONT
(D)
Full: (FRONT+1) mod n == REAR, empty: REAR == FRONT
Answer
Please comment below if you find anything wrong in the above post
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