Sorting Stack Using Additional Stack

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Introduction

In computer science, a stack is a data structure that follows the Last In First Out (LIFO) principle. Sorting a stack means arranging its elements in a specific order. In this challenge, we will sort a stack using another stack as a buffer.


Skills Graph

%%%%{init: {'theme':'neutral'}}%%%% flowchart RL algorithm(("`Algorithm`")) -.-> algorithm/BasicAlgorithmsGroup(["`Basic Algorithms`"]) python(("`Python`")) -.-> python/ControlFlowGroup(["`Control Flow`"]) python(("`Python`")) -.-> python/DataStructuresGroup(["`Data Structures`"]) python(("`Python`")) -.-> python/FunctionsGroup(["`Functions`"]) python(("`Python`")) -.-> python/ObjectOrientedProgrammingGroup(["`Object-Oriented Programming`"]) python(("`Python`")) -.-> python/AdvancedTopicsGroup(["`Advanced Topics`"]) algorithm/BasicAlgorithmsGroup -.-> algorithm/sorting_searching("`Sorting Searching`") algorithm/BasicAlgorithmsGroup -.-> algorithm/stacks_queues("`Stacks Queues`") python/ControlFlowGroup -.-> python/conditional_statements("`Conditional Statements`") python/ControlFlowGroup -.-> python/while_loops("`While Loops`") python/DataStructuresGroup -.-> python/tuples("`Tuples`") python/FunctionsGroup -.-> python/function_definition("`Function Definition`") python/FunctionsGroup -.-> python/default_arguments("`Default Arguments`") python/ObjectOrientedProgrammingGroup -.-> python/classes_objects("`Classes and Objects`") python/ObjectOrientedProgrammingGroup -.-> python/constructor("`Constructor`") python/ObjectOrientedProgrammingGroup -.-> python/polymorphism("`Polymorphism`") python/ObjectOrientedProgrammingGroup -.-> python/encapsulation("`Encapsulation`") python/AdvancedTopicsGroup -.-> python/iterators("`Iterators`") subgraph Lab Skills algorithm/sorting_searching -.-> lab-268887{{"`Sorting Stack Using Additional Stack`"}} algorithm/stacks_queues -.-> lab-268887{{"`Sorting Stack Using Additional Stack`"}} python/conditional_statements -.-> lab-268887{{"`Sorting Stack Using Additional Stack`"}} python/while_loops -.-> lab-268887{{"`Sorting Stack Using Additional Stack`"}} python/tuples -.-> lab-268887{{"`Sorting Stack Using Additional Stack`"}} python/function_definition -.-> lab-268887{{"`Sorting Stack Using Additional Stack`"}} python/default_arguments -.-> lab-268887{{"`Sorting Stack Using Additional Stack`"}} python/classes_objects -.-> lab-268887{{"`Sorting Stack Using Additional Stack`"}} python/constructor -.-> lab-268887{{"`Sorting Stack Using Additional Stack`"}} python/polymorphism -.-> lab-268887{{"`Sorting Stack Using Additional Stack`"}} python/encapsulation -.-> lab-268887{{"`Sorting Stack Using Additional Stack`"}} python/iterators -.-> lab-268887{{"`Sorting Stack Using Additional Stack`"}} end

Sort Stack

Problem

Given a stack, write a function to sort it in ascending order. You can use another stack as a buffer. The sorted stack should have the largest element at the top.

Requirements

To solve this problem, we need to consider the following requirements:

  • The largest element should be at the top of the sorted stack.
  • The stack can have duplicate values.
  • We can assume that we already have a stack class that can be used for this problem.
  • We can assume that the stack fits in memory.

Example Usage

Here are some examples of how the function should behave:

  • Empty stack -> None
  • One element stack -> The same element
  • Two or more element stack (general case) -> Sorted stack in ascending order
  • Already sorted stack -> The same stack

Summary

In this challenge, we learned how to sort a stack using another stack as a buffer. We also saw the requirements and examples of how the function should behave. By following these guidelines, we can write a function that sorts a stack in ascending order.

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