Push of Circular Queue

TL;DR

Explaining the push function in a circular queue and how elements are added and checked for fullness.

Transcript

click the bell icon to get latest videos from Ekeeda Hello friends we have already discussed about the circular tube now we will look at push function of the circular tube in other words I can say we are going to add the elements in the circular queue in case of circular key you must remember that we have two important variables front and rear when... Read More

Key Insights

• 🫷 Circular queue push function involves checking for fullness and emptiness before adding elements.
• 🖐️ Front and rear variables play a vital role in determining the state of the circular queue.
• 👾 Adding elements requires checking for space availability and pushing values using the rear variable.

Questions & Answers

Q: What is the significance of the front and rear variables in a circular queue?

Front and rear variables in a circular queue point to the first and last positions of the elements respectively. In a circular queue, rear may also point back to front, indicating a circular structure.

Q: How is the fullness of a circular queue checked before pushing elements?

The fullness of a circular queue is determined by checking if the expression (rear + 1) mod size == front holds true. If this condition is met, the queue is full and no more elements can be inserted.

Q: What happens if the circular queue is found to be empty before pushing elements?

If the circular queue is empty (front == -1), the first element to be added will be inserted at the first position. Front is then forcefully set to 0 to indicate the addition of the first element.

Q: How are elements added to the circular queue using the push function?

Elements are added to the circular queue by first checking if the queue is full or empty. If the queue is not full, the user is prompted to input a value which is then pushed to the circular queue using the rear variable.

Summary & Key Takeaways

• The push function in a circular queue involves checking if the queue is full or empty before adding elements.

• If the queue is full, no more elements can be added, but if it's not full, elements can be inserted.

• Front and rear variables are crucial in determining the state of the circular queue.