Data Structures Question:

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Why is the isEmpty() member method called?

Data Structures Interview Question
Data Structures Interview Question

Answer:

The isEmpty() member method is called within the dequeue process to determine if there is an item in the queue to be removed i.e. isEmpty() is called to decide whether the queue has at least one element. This method is called by the dequeue() method before returning the front element.

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Which process places data at the back of the queue?How is the front of the queue calculated in data structure?