In order to input a list of values and output them in order, you could use a Queue. In order to input a list of values and output them in opposite order, you could use a Stack.

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Quizplus · Accepted Answer

The Queue provides First-in First-out access, so the items would be accessed in the order that they were entered. The Stack provides Last-in First-out access, so the items would be accessed in the opposite order that they were entered.

In Order to Input a List of Values and Output