Palindrome Linked List | Data Structures and Algorithms

Introduction

In computer science, a palindrome is a word, phrase, number, or other sequence of characters that reads the same forward and backward. In this challenge, we will determine if a linked list is a palindrome.

Skills Graph

%%%%{init: {'theme':'neutral'}}%%%% flowchart RL python(("`Python`")) -.-> python/BasicConceptsGroup(["`Basic Concepts`"]) algorithm(("`Algorithm`")) -.-> algorithm/BasicAlgorithmsGroup(["`Basic Algorithms`"]) python(("`Python`")) -.-> python/FileHandlingGroup(["`File Handling`"]) 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`"]) python(("`Python`")) -.-> python/PythonStandardLibraryGroup(["`Python Standard Library`"]) python/BasicConceptsGroup -.-> python/comments("`Comments`") algorithm/BasicAlgorithmsGroup -.-> algorithm/linked_lists("`Linked Lists`") python/FileHandlingGroup -.-> python/with_statement("`Using with Statement`") python/BasicConceptsGroup -.-> python/variables_data_types("`Variables and Data Types`") python/BasicConceptsGroup -.-> python/booleans("`Booleans`") python/ControlFlowGroup -.-> python/conditional_statements("`Conditional Statements`") python/ControlFlowGroup -.-> python/for_loops("`For Loops`") python/ControlFlowGroup -.-> python/while_loops("`While Loops`") python/DataStructuresGroup -.-> python/lists("`Lists`") 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`") python/PythonStandardLibraryGroup -.-> python/data_collections("`Data Collections`") python/FunctionsGroup -.-> python/build_in_functions("`Build-in Functions`") subgraph Lab Skills python/comments -.-> lab-268845{{"`Palindrome Detection in Linked Lists`"}} algorithm/linked_lists -.-> lab-268845{{"`Palindrome Detection in Linked Lists`"}} python/with_statement -.-> lab-268845{{"`Palindrome Detection in Linked Lists`"}} python/variables_data_types -.-> lab-268845{{"`Palindrome Detection in Linked Lists`"}} python/booleans -.-> lab-268845{{"`Palindrome Detection in Linked Lists`"}} python/conditional_statements -.-> lab-268845{{"`Palindrome Detection in Linked Lists`"}} python/for_loops -.-> lab-268845{{"`Palindrome Detection in Linked Lists`"}} python/while_loops -.-> lab-268845{{"`Palindrome Detection in Linked Lists`"}} python/lists -.-> lab-268845{{"`Palindrome Detection in Linked Lists`"}} python/tuples -.-> lab-268845{{"`Palindrome Detection in Linked Lists`"}} python/function_definition -.-> lab-268845{{"`Palindrome Detection in Linked Lists`"}} python/default_arguments -.-> lab-268845{{"`Palindrome Detection in Linked Lists`"}} python/classes_objects -.-> lab-268845{{"`Palindrome Detection in Linked Lists`"}} python/constructor -.-> lab-268845{{"`Palindrome Detection in Linked Lists`"}} python/polymorphism -.-> lab-268845{{"`Palindrome Detection in Linked Lists`"}} python/encapsulation -.-> lab-268845{{"`Palindrome Detection in Linked Lists`"}} python/iterators -.-> lab-268845{{"`Palindrome Detection in Linked Lists`"}} python/data_collections -.-> lab-268845{{"`Palindrome Detection in Linked Lists`"}} python/build_in_functions -.-> lab-268845{{"`Palindrome Detection in Linked Lists`"}} end

Palindrome

Problem

Given a singly linked list, determine if it is a palindrome. A linked list is a palindrome if the sequence of elements in the list is the same forward and backward.

Requirements

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

The linked list is non-circular and singly linked.
A single character or number is not considered a palindrome.
We already have a linked list class that can be used for this problem.
We can use additional data structures.
The linked list fits in memory.

Example Usage

Here are some examples of how the function should behave:

An empty list should return False.
A single element list should return False.
A list with two or more elements that is not a palindrome should return False.
A palindrome with an even length should return True.
A palindrome with an odd length should return True.

Summary

In this challenge, we learned how to determine if a linked list is a palindrome. We considered the requirements and examples to ensure that our solution is accurate and efficient.

Palindrome Detection in Linked Lists