Stacks and Queues Quiz

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Questions and Answers

Which of the following is an example of a mutable data structure?

  • Strings
  • Number types
  • Tuples
  • Lists (correct)

What is the main characteristic of a stack data structure?

  • It is a first in, first out (FIFO) stack
  • It has two operations defined: push and pop
  • It is a push-down stack (correct)
  • It supports direct support in Python 3

Why is a stack called a stack?

  • Because it is a mutable data structure
  • Because it is a physical stack of items (correct)
  • Because it is a push-down stack
  • Because it is a last in, first out (LIFO) stack

Which of the following operations appends an element at the top of a stack?

<p>push (C)</p> Signup and view all the answers

What types of data structures have we exclusively worked with thus far in the course?

<p>Number types, strings, tuples, lists, and dictionaries (C)</p> Signup and view all the answers

Flashcards

Mutable Data Structure Example

A data structure whose elements can be changed after it is created.

Stack Data Structure

A data structure where the last element added is the first one removed (LIFO).

Stack Naming

The data structure is called a stack because it resembles a real-world stack of items.

Stack Operation: Push

The operation that adds an element to the top of a stack.

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Data Structures in the Course

Number types, strings, tuples, lists, and dictionaries.

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Study Notes

Data Structures

  • A mutable data structure is an array or list.

Stack Data Structure

  • The main characteristic of a stack data structure is that it follows the Last In, First Out (LIFO) principle.
  • A stack is called a stack because it resembles a physical stack, where elements are added and removed from the top.

Stack Operations

  • The push operation appends an element at the top of a stack.

Course Overview

  • We have exclusively worked with mutable data structures, such as arrays and lists, thus far in the course.

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