Stacks and Queues - Computer Science A level

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Stacks and queues are two abstract data types. Let’s take a look at how they operate. A stack is a collection of data elements that are stored in a linear method. A simple way to view this is as a vertical stack of blocks, like this. There are two main operations that are used to manipulate the data in the stack, these are push and pop. The push operation adds a data element to the stack. The pop operation removes a data element from the stack.
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