The document introduces stacks and discusses their implementation and applications. It defines a stack as a data structure that follows LIFO order, where elements can only be added and removed from one end. Stacks have two main implementations - using arrays and linked lists. Common applications of stacks include undo/redo in editors, browser history, and evaluating postfix expressions.
Queues
a. Concept and Definition
b. Queue as an ADT
c. Implementation of Insert and Delete operation of:
• Linear Queue
• Circular Queue
For More:
https://github.com/ashim888/dataStructureAndAlgorithm
http://www.ashimlamichhane.com.np/
Queues
a. Concept and Definition
b. Queue as an ADT
c. Implementation of Insert and Delete operation of:
• Linear Queue
• Circular Queue
For More:
https://github.com/ashim888/dataStructureAndAlgorithm
http://www.ashimlamichhane.com.np/
Data Structure- Stack operations may involve initializing the stack, using it and then de-initializing it. Apart from these basic stuffs, a stack is used for the following two primary operations −
PUSH, POP, PEEP
a. Concept and Definition
b. Binary Tree
c. Introduction and application
d. Operation
e. Types of Binary Tree
• Complete
• Strictly
• Almost Complete
f. Huffman algorithm
g. Binary Search Tree
• Insertion
• Deletion
• Searching
h. Tree Traversal
• Pre-order traversal
• In-order traversal
• Post-order traversal
Slides at myblog
http://www.ashimlamichhane.com.np/2016/07/tree-slide-for-data-structure-and-algorithm/
Assignments at github
https://github.com/ashim888/dataStructureAndAlgorithm/tree/dev/Assignments/assignment_7
a. Concept and Definition✓
b. Inserting and Deleting nodes ✓
c. Linked implementation of a stack (PUSH/POP) ✓
d. Linked implementation of a queue (Insert/Remove) ✓
e. Circular List
• Stack as a circular list (PUSH/POP) ✓
• Queue as a circular list (Insert/Remove) ✓
f. Doubly Linked List (Insert/Remove) ✓
For more course related material:
https://github.com/ashim888/dataStructureAndAlgorithm/
Personal blog
www.ashimlamichhane.com.np
Extendible Hashing Example
Extendible hashing solves bucket overflow by splitting the bucket into two and if necessary increasing the directory size. When the directory size increases it doubles its size a certain number of times.
Data Structure- Stack operations may involve initializing the stack, using it and then de-initializing it. Apart from these basic stuffs, a stack is used for the following two primary operations −
PUSH, POP, PEEP
a. Concept and Definition
b. Binary Tree
c. Introduction and application
d. Operation
e. Types of Binary Tree
• Complete
• Strictly
• Almost Complete
f. Huffman algorithm
g. Binary Search Tree
• Insertion
• Deletion
• Searching
h. Tree Traversal
• Pre-order traversal
• In-order traversal
• Post-order traversal
Slides at myblog
http://www.ashimlamichhane.com.np/2016/07/tree-slide-for-data-structure-and-algorithm/
Assignments at github
https://github.com/ashim888/dataStructureAndAlgorithm/tree/dev/Assignments/assignment_7
a. Concept and Definition✓
b. Inserting and Deleting nodes ✓
c. Linked implementation of a stack (PUSH/POP) ✓
d. Linked implementation of a queue (Insert/Remove) ✓
e. Circular List
• Stack as a circular list (PUSH/POP) ✓
• Queue as a circular list (Insert/Remove) ✓
f. Doubly Linked List (Insert/Remove) ✓
For more course related material:
https://github.com/ashim888/dataStructureAndAlgorithm/
Personal blog
www.ashimlamichhane.com.np
Extendible Hashing Example
Extendible hashing solves bucket overflow by splitting the bucket into two and if necessary increasing the directory size. When the directory size increases it doubles its size a certain number of times.
CloudConnect 2012: The cloud application stackGeva Perry
As the basic components of cloud computing hit the mainstream, we’re seeing a second generation of application stack components emerge—cloud databases, load-balancers, messaging queues, caches, workers, and so on. They’re much more than just rented metal, and they’re what makes clouds much more than just on-demand hardware.
In this session, we’ll look at the latest and greatest trends in the “cloud stack”, looking at where this technology is headed, why it holds so much promise, and what the major challenges and risks are.
Venay Magen likes the shading red, particularly on Tuesdays. He cherishes to drink bourbon (on all days). He figured out how to drink whisky from his youth companion Zippo, when they went to class together at Mount Temple Comprehensive School. He is best known as the lead vocalist for the band MN3.
What is Stack, Its Operations, Queue, Circular Queue, Priority QueueBalwant Gorad
Explain Stack and its Concepts, Its Operations, Queue, Circular Queue, Priority Queue. Explain Queue and It's Operations
Data Structures, Abstract Data Types
Stack and its Applications : Data Structures ADTSoumen Santra
Stack is an Abstract Data Type (ADT), Last in First out (LIFO) concept.
Features of Stack: Abstract Data Type (ADT)
C implementations of Stack's Functions like push(), pop(), isEmpty(), isOverflow(), peep()
Stack Applications like Tower of Hanoi, Infix to Postfix Conversion, Postfix Evaluation, Parenthesis Checking etc.
Diagramatic Representation of Tower of Hanoi, Infix to Postfix Conversion & Postfix Evaluation
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Automobile Management System Project Report.pdfKamal Acharya
The proposed project is developed to manage the automobile in the automobile dealer company. The main module in this project is login, automobile management, customer management, sales, complaints and reports. The first module is the login. The automobile showroom owner should login to the project for usage. The username and password are verified and if it is correct, next form opens. If the username and password are not correct, it shows the error message.
When a customer search for a automobile, if the automobile is available, they will be taken to a page that shows the details of the automobile including automobile name, automobile ID, quantity, price etc. “Automobile Management System” is useful for maintaining automobiles, customers effectively and hence helps for establishing good relation between customer and automobile organization. It contains various customized modules for effectively maintaining automobiles and stock information accurately and safely.
When the automobile is sold to the customer, stock will be reduced automatically. When a new purchase is made, stock will be increased automatically. While selecting automobiles for sale, the proposed software will automatically check for total number of available stock of that particular item, if the total stock of that particular item is less than 5, software will notify the user to purchase the particular item.
Also when the user tries to sale items which are not in stock, the system will prompt the user that the stock is not enough. Customers of this system can search for a automobile; can purchase a automobile easily by selecting fast. On the other hand the stock of automobiles can be maintained perfectly by the automobile shop manager overcoming the drawbacks of existing system.
Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
Vaccine management system project report documentation..pdfKamal Acharya
The Division of Vaccine and Immunization is facing increasing difficulty monitoring vaccines and other commodities distribution once they have been distributed from the national stores. With the introduction of new vaccines, more challenges have been anticipated with this additions posing serious threat to the already over strained vaccine supply chain system in Kenya.
COLLEGE BUS MANAGEMENT SYSTEM PROJECT REPORT.pdfKamal Acharya
The College Bus Management system is completely developed by Visual Basic .NET Version. The application is connect with most secured database language MS SQL Server. The application is develop by using best combination of front-end and back-end languages. The application is totally design like flat user interface. This flat user interface is more attractive user interface in 2017. The application is gives more important to the system functionality. The application is to manage the student’s details, driver’s details, bus details, bus route details, bus fees details and more. The application has only one unit for admin. The admin can manage the entire application. The admin can login into the application by using username and password of the admin. The application is develop for big and small colleges. It is more user friendly for non-computer person. Even they can easily learn how to manage the application within hours. The application is more secure by the admin. The system will give an effective output for the VB.Net and SQL Server given as input to the system. The compiled java program given as input to the system, after scanning the program will generate different reports. The application generates the report for users. The admin can view and download the report of the data. The application deliver the excel format reports. Because, excel formatted reports is very easy to understand the income and expense of the college bus. This application is mainly develop for windows operating system users. In 2017, 73% of people enterprises are using windows operating system. So the application will easily install for all the windows operating system users. The application-developed size is very low. The application consumes very low space in disk. Therefore, the user can allocate very minimum local disk space for this application.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Democratizing Fuzzing at Scale by Abhishek Aryaabh.arya
Presented at NUS: Fuzzing and Software Security Summer School 2024
This keynote talks about the democratization of fuzzing at scale, highlighting the collaboration between open source communities, academia, and industry to advance the field of fuzzing. It delves into the history of fuzzing, the development of scalable fuzzing platforms, and the empowerment of community-driven research. The talk will further discuss recent advancements leveraging AI/ML and offer insights into the future evolution of the fuzzing landscape.
1. Introduction to Stacks
• What is a Stack
• Stack implementation using array.
• Stack implementation using linked list.
• Applications of Stack.
2. What is a Stack?
• Stack is a data structure in which data is added and
removed at only one end called the top.
• To add (push) an item to the stack, it must be placed on
the top of the stack.
• To remove (pop) an item from the stack, it must be
removed from the top of the stack too.
• Thus, the last element that is pushed into the stack, is
the first element to be popped out of the stack.
i.e., Last In First Out (LIFO)
3. An Example of Stack
2
8
1
7
2
7
2
1
7
2
1
7
2
8
1
7
2
8
1
7
2
top
top
top
top
top
top
Push(8) Push(2)
pop()
pop()
pop()
4. Stack Implementations
• In our implementation, a stack is a container that extends the
AbstractContainer class and implements the Stack interface.
• Two implementations:
– StackAsArray
• The underlying data structure is an array of Object
– StackAsLinkedList
• The underlying data structure is an object of MyLinkedList
public interface Stack extends Container {
public abstract Object getTop();
public abstract void push(Object obj);
public abstract Object pop();
}
5. StackAsArray – Constructor
• In the StackAsArray implementation that follows, the top of the stack is
array[count – 1] and the bottom is array[0]:
• The constructor’s single parameter, size, specifies the maximum
number of items that can be stored in the stack.
• The variable array is initialized to be an array of length size.
public class StackAsArray extends AbstractContainer
implements Stack {
protected Object[] array;
public StackAsArray(int size){
array = new Object[size];
}
// …
6. StackAsArray – purge() Method
• The purpose of the purge method is to remove all the
contents of a container.
• To empty the stack, the purge method simply assigns
the value null to the first count positions of the array.
public void purge(){
while (count > 0)
array[--count] = null;
}
Complexity is O(n(
7. StackAsArray – push() Method
• push() method adds an element at the top the stack.
• It takes as argument an Object to be pushed.
• It first checks if there is room left in the stack. If no room
is left, it throws a ContainerFullException exception.
Otherwise, it puts the object into the array, and then
increments count variable by one.
public void push(Object object){
if (count == array.length)
throw new ContainerFullException();
else
array[count++] = object;
}
Complexity is O(1(
8. StackAsArray – pop() Method
• The pop method removes an item from the stack and
returns that item.
• The pop method first checks if the stack is empty. If the
stack is empty, it throws a ContainerEmptyException.
Otherwise, it simply decreases count by one and returns
the item found at the top of the stack.
public Object pop(){
if(count == 0)
throw new ContainerEmptyException();
else {
Object result = array[--count];
array[count] = null;
return result;
}
} Complexity is O(1(
9. StackAsArray – getTop() Method
• getTop() method first checks if the stack is empty.
• getTop() method is a stack accessor which returns the top
item in the stack without removing that item. If the stack is
empty, it throws a ContainerEmptyException. Otherwise,
it returns the top item found at position count-1.
public Object getTop(){
if(count == 0)
throw new ContainerEmptyException();
else
return array[count – 1];
}
Complexity is O(1(
10. StackAsArray – iterator() Method
public Iterator iterator() {
return new Iterator() {
private int position = count-1;
public boolean hasNext() {
return position >=0;
}
public Object next () {
if(position < 0)
throw new NoSuchElementException();
else
return array[position--];
}
};
}
11. StackAsLinkedList Implementation
public class StackAsLinkedList
extends AbstractContainer
implements Stack {
protected MyLinkedList list;
public StackAsLinkedList(){
list = new MyLinkedList();
}
public void purge(){
list.purge();
count = 0;
}
// …
Complexity is O(1(
12. StackAsLinkedList Implementation (Cont.)
public void push(Object obj){
list.prepend(obj);
count++;
}
public Object pop(){
if(count == 0)
throw new ContainerEmptyException();
else{
Object obj = list.getFirst();
list.extractFirst();
count--;
return obj;
}
}
public Object getTop(){
if(count == 0)
throw new ContainerEmptyException();
else
return list.getFirst();
}
Complexity is O(1(
Complexity is O(1(
Complexity is O(1(
13. StackAsLinkedList Implementation (Cont.)
public Iterator iterator() {
return new Iterator() {
private MyLinkedList.Element position =
list.getHead();
public boolean hasNext() {
return position != null;
}
public Object next() {
if(position == null)
throw new NoSuchElementException();
else {
Object obj = position.getData();
position = position.getNext();
return obj;
}
}
};
}
14. Applications of Stack
• Some direct applications:
– Page-visited history in a Web browser
– Undo sequence in a text editor
– Chain of method calls in the Java Virtual Machine
– Evaluating postfix expressions
• Some indirect applications
– Auxiliary data structure for some algorithms
– Component of other data structures
15. Application of Stack - Evaluating Postfix Expression
(5+9)*2+6*5
• An ordinary arithmetical expression like the above is called infix-
expression -- binary operators appear in between their operands.
• The order of operations evaluation is determined by the
precedence rules and parenthesis.
• When an evaluation order is desired that is different from that
provided by the precedence, parentheses are used to override
precedence rules.
16. Application of Stack - Evaluating Postfix Expression
• Expressions can also be represented using postfix notation -
where an operator comes after its two operands.
• The advantage of postfix notation is that the order of operation
evaluation is unique without the need for precedence rules or
parenthesis.
Infix Postfix
16 / 2 16 2 /
(2 + 14)* 5 2 14 + 5 *
2 + 14 * 5 2 14 5 * +
(6 – 2) * (5 + 4) 6 2 - 5 4 + *
17. Application of Stack - Evaluating Postfix Expression
• The following algorithm uses a stack to evaluate a postfix expressions.
Start with an empty stack
for (each item in the expression) {
if (the item is a number)
Push the number onto the stack
else if (the item is an operator){
Pop two operands from the stack
Apply the operator to the operands
Push the result onto the stack
}
}
Pop the only one number from the stack – that’s the result of the evaluation
18. Application of Stack - Evaluating Postfix Expression
• Example: Consider the postfix expression, 2 10 + 9 6 - /, which is
(2 + 10) / (9 - 6) in infix, the result of which is 12 / 3 = 4.
• The following is a trace of the postfix evaluation algorithm for the
above.