Tag Archives: queue

C++ || Snippet – Custom Template Linked List Sample Code

This page will consist of sample code for a singly linked list, which is loosely based on the built in C++ “List” library. Provided in the linked list class are the following functions:

From the following, the functions of interest to look out for are the “Delete, Display, Replace, InsertBefore, InsertAfter, and InsertInOrder” functions as they are typically used as programming assignments in many C++ Data structures courses to further demonstrate how linked lists operate.

===== DEMONSTRATION HOW TO USE =====

Use of the above template class is the same as its STL counterpart. Here is a sample program demonstrating its use.


Once compiled, you should get this as your output

** These are names of fruits sorted in order using the 'InsertInOrder()' function:

Apple
Orange
Plum
Tomato

There is currently 4 items in the list

** Here is the same list with the word 'Plum' deleted
using the 'Delete()' function:

Apple
Orange
Tomato

There is currently 3 items in the list

** Now the word 'Bike' will be added to the list,
right after the word 'Apple' using the 'InsertAfter()' funciton:

Apple
Bike
Orange
Tomato

There is currently 4 items in the list

** Now the name 'Jessica' will be added to the list,
right before the word 'Orange' using the 'InsertBefore()' funciton:

Apple
Bike
Jessica
Orange
Tomato

There is currently 5 items in the list

** The word 'Orange' will now be replaced with the name,
'Kat' using the 'Replace()' function:

Apple
Bike
Jessica
Kat
Tomato

There is currently 5 items in the list

C++ || Snippet – Palindrome Checker Using A Stack & Queue

This page consists of a sample program which demonstrates how to use a stack and a queue to test for a palindrome. This program is great practice for understanding how the two data structures work.

REQUIRED KNOWLEDGE FOR THIS PROGRAM

Structs
Classes
Template Classes - What Are They?
Stacks
Queues
LIFO - Last In First Out
FIFO - First In First Out
#include 'SingleQueue.h'
#include 'ClassStackListType.h'

This program first asks the user to enter in text which they wish to compare for similarity. The data is then saved into the system using the “enqueue” and “push” functions available within the queue and stack classes. After the data is obtained, a while loop is used to iterate through both classes, checking to see if the characters at each location within both classes are the same. If the text within both classes are the same, it is a palindrome.

NOTE: This program uses two custom template.h classes. To obtain the code for both class, click here and here.


QUICK NOTES:
The highlighted lines are sections of interest to look out for.

The code is heavily commented, so no further insight is necessary. If you have any questions, feel free to leave a comment below.

Once compiled, you should get this as your output
(Note: The code was compiled 2 separate times to demonstrate different output)

====== RUN 1 ======

Enter in some text to see if its a palindrome: StEP on No pETS

StEP on No pETS is a palindrome!

====== RUN 2 ======

Enter in some text to see if its a palindrome: Hello World

Hello World is NOT a palindrome..

C++ || Snippet – Singly Linked List Custom Template Queue Sample Code

This page will consist of sample code for a custom singly linked list template queue. This implementation differs from the previously highlighted doubly linked list in that this version uses a single node to store its data rather than using two separate nodes (front and rear).

Looking for sample code for a stack? Click here.

REQUIRED KNOWLEDGE FOR THIS SNIPPET

Structs
Classes
Template Classes - What Are They?''
Queue - What is it?
FIFO - First In First Out
#include < queue>
Linked Lists - How To Use

This template class is a custom duplication of the Standard Template Library (STL) queue class. Whether you like building your own data structures, you simply do not like to use any inbuilt functions, opting to build everything yourself, or your homework requires you make your own data structure, this sample code is really useful. I feel its beneficial building functions such as this, that way you better understand the behind the scene processes.

QUICK NOTES:
The highlighted lines are sections of interest to look out for.

The code is heavily commented, so no further insight is necessary. If you have any questions, feel free to leave a comment below.

===== DEMONSTRATION HOW TO USE =====

Use of the above template class is the same as its STL counterpart. Here is a sample program demonstrating its use.

Once compiled, you should get this as your output

charQueue has 35 items in it and contains the text:
My Programming Notes Is A Big Help!

intQueue has 12 items in it.
The sum of the numbers in the queue is: -2817

doubleQueue has 11 items in it.
The sum of the numbers in the queue is: 210.777
Press any key to continue . . .

C++ || Snippet – Doubly Linked List Custom Template Queue Sample Code

This page will consist of sample code for a custom doubly linked list template queue. This implementation is considered a doubly linked list because it uses two nodes to store data in the queue – a ‘front’ and a ‘rear’ node. This is not a circular linked list, nor does it link forwards and/or backwards.

Looking for sample code for a stack? Click here.

REQUIRED KNOWLEDGE FOR THIS SNIPPET

Structs
Classes
Template Classes - What Are They?
Queue - What is it?
FIFO - First In First Out
#include < queue>
Linked Lists - How To Use

This template class is a custom duplication of the Standard Template Library (STL) queue class. Whether you like building your own data structures, you simply do not like to use any inbuilt functions, opting to build everything yourself, or your homework requires you make your own data structure, this sample code is really useful. I feel its beneficial building functions such as this, that way you better understand the behind the scene processes.


QUICK NOTES:
The highlighted lines are sections of interest to look out for.

The code is heavily commented, so no further insight is necessary. If you have any questions, feel free to leave a comment below.

===== DEMONSTRATION HOW TO USE =====

Use of the above template class is the same as its STL counterpart. Here is a sample program demonstrating its use.


Once compiled, you should get this as your output

charQueue has 39 items in it and contains the text:
My Programming Notes Helped Me Succeed!

intQueue has 9 items in it.
The sum of the numbers in the queue is: -2145

floatQueue has 10 items in it.
The sum of the numbers in the queue is: -286.717