A queue invariant is a condition
A) obeyed by queues that need to remain constant
B) that is required to be true after the execution of each queue class method
C) that is more stringent than invariants for other types of collections
D) that is true regardless of the actual type used to instantiate a generic queue.

Question

Quizplus · Accepted Answer

A queue invariant is a condition that must be true after the execution of each queue class method. It is a property that a queue must maintain throughout its lifetime. This ensures the correctness and integrity of the data in the queue. Therefore, option B is the correct answer. The other options are not true about queue invariants.

A Queue Invariant Is a Condition