![]() ![]() ![]() Calling this structure a stack is by analogy to a set of physical items stacked one atop another, such as a stack of plates. Pop, which removes the most recently added element that was not yet removed.Īdditionally, a peek operation can, without modifying the stack, return the value of the last element added.Push, which adds an element to the collection, and.In computer science, a stack is an abstract data type that serves as a collection of elements, with two main operations: Simple representation of a stack runtime with push and pop operations. Similar to a stack of plates, adding or removing is only possible at the top. For some concrete uses of the term in computing, see Stack (disambiguation) § Computing. This article is about the abstract concept.
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