Question

Assume you are using an array-based queue and have just instantiated a queue of capacity 10. You enqueue 5 elements, dequeue 5 elements, and then enqueue 1 more element. Which index of the internal array elements holds the value of that last element you enqueued

Answer 1

The answer is "5".

Step-by-step explanation:

In the queue based-array, it follows the FIFO method, and in the question, it is declared that a queue has a capacity of 10 elements, and insert the 5 elements in the queue and after inserting it enqueue 5 elements and at the last, it inserts an element 1 more element on the queue and indexing of array always start from 0, that's why its last element index value is 5.