Consider a queue implemented as an array. The queue has a maximum capacity of 5. Initially, the queue is empty. After performing the following operations: enqueue(1), enqueue(2), enqueue(3), dequeue(), enqueue(4), enqueue(5), what will be the front and rear pointers respectively?front = 0, rear = 4front = 1, rear = 4front = 1, rear = 0front = 0, rear = 3
Question
Consider a queue implemented as an array. The queue has a maximum capacity of 5. Initially, the queue is empty. After performing the following operations: enqueue(1), enqueue(2), enqueue(3), dequeue(), enqueue(4), enqueue(5), what will be the front and rear pointers respectively?front = 0, rear = 4front = 1, rear = 4front = 1, rear = 0front = 0, rear = 3
Solution
The front and rear pointers after performing the operations will be front = 1, rear = 4.
Here's the step by step explanation:
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Initially, the queue is empty, so front = rear = -1.
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After enqueue(1), the queue becomes {1}, so front = rear = 0.
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After enqueue(2), the queue becomes {1, 2}, so front = 0, rear = 1.
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After enqueue(3), the queue becomes {1, 2, 3}, so front = 0, rear = 2.
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After dequeue(), the first element is removed, so the queue becomes {2, 3}, and front = 1, rear = 2.
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After enqueue(4), the queue becomes {2, 3, 4}, so front = 1, rear = 3.
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After enqueue(5), the queue becomes {2, 3, 4, 5}, so front = 1, rear = 4.
Similar Questions
What happens when the rear pointer reaches the end of the array in the array representation of a queue?
n a Circular Queue, when the "front" and "rear" pointers are both pointing to the same location, the queue is considered _____.a)overflowedb)emptyc)fulld)half-full
In a queue implemented using a circular array, if front = rear, what can be inferred about the queue?The queue is full.The queue is empty.The queue has exactly one element.Either the queue is full or empty, depending on the implementation.
What is the time complexity of the dequeue operation in a queue implemented using an array with pointers to the front and rear?O(1)O(n)O(log n)O(n log n)
A normal QUEUE, if implemented using an array of size MAX-SIZE, gets full whenFront = (rear + 1)% MAX-SIZERear = MAX-SIZE – 1Rear = FrontFront = rear + 1;
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