Stack is very important and common data structure.
Akin to linked list or array, stack is linear data structure which contains a group of elements.
Those elements are stacked on top of each other, like a physical objects.
Let’s take a look at it.
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Some sources:
https://en.wikipedia.org/wiki/Stack_(abstract_data_type)
https://en.wikipedia.org/wiki/Stack_overflow
http://stackoverflow.com/questions/26158/how-does-a-stack-overflow-occur-and-how-do-you-prevent-it
