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Stack (abstract data type) - Wikipedia Similarly to a stack of plates, adding or removing is only practical at the top Simple representation of a stack runtime with push and pop operations In computer science, a stack is an abstract data type that serves as a collection of elements with two main operations: Push, which adds an element to the collection, and Pop, which removes the most recently added element Additionally, a peek
Shunting yard algorithm - Wikipedia Input: 3 + 4 Push 3 to the output queue (whenever a number is read it is pushed to the output) Push + (or its ID) onto the operator stack Push 4 to the output queue After reading the expression, pop the operators off the stack and add them to the output In this case there is only one, "+" Output: 3 4 + This already shows a couple of rules: All numbers are pushed to the output when they are
Binary heap - Wikipedia GitHub Retrieved 2020-08-07 ^ "heapq — Heap queue algorithm — Python 3 8 5 documentation" docs python org Retrieved 2020-08-07 heapq heappushpop (heap, item): Push item on the heap, then pop and return the smallest item from the heap The combined action runs more efficiently than heappush () followed by a separate call to heappop ()
Data type - Wikipedia For example, a stack has push pop operations that follow a Last-In-First-Out rule, and can be concretely implemented using either a list or an array Abstract data types are used in formal semantics and program verification and, less strictly, in design
pushd and popd - Wikipedia Shell commands to save and restore the working directoryDirectory paths stack Elements are pushed onto and popped from the top pushd and popd are shell commands that together allow the user to revert to a previous working directory via the command line They use a stack data structure for directory paths pushd pushes the working directory path onto the stack and changes to the specified
Double-ended queue - Wikipedia Javascript's Array prototype Perl 's arrays have native support for both removing (shift and pop) and adding (unshift and push) elements on both ends Python 2 4 introduced the collections module with support for deque objects It is implemented using a doubly linked list of fixed-length subarrays
Pink Floyds Dark Side of the Moon: Things You Didnt Know The members of Pink Floyd often spent their downtime during the Dark Side sessions watching Monty Python’s Flying Circus on BBC2, so when the British comedy troupe ran into difficulty raising
Heap (data structure) - Wikipedia Programming language implementations The C++ Standard Library provides the make_heap, push_heap and pop_heap algorithms for heaps (usually implemented as binary heaps), which operate on arbitrary random access iterators It treats the iterators as a reference to an array, and uses the array-to-heap conversion
Peek (data type operation) - Wikipedia It thus returns the same value as operations such as "pop" or "dequeue", but does not modify the data The name "peek" is similar to the basic "push" and "pop" operations on a stack, but the name for this operation varies depending on data type and language