Insertion Sort Algorithm

Insertion Sort Algorithm Insertion sort algorithm is a simple sorting algorithm that builds the final sorted array (or list) one item at a time.  It is much less efficient on large lists than more advanced algorithms such as quicksort, heapsort, or merge sort. This works like the way we sort playing cards in our hands. […]

Linear or Sequential Search Algorithm[Java]

Linear or Sequential Search Algorithm Linear or sequential search algorithm is a method for finding a target value within a list. It sequentially checks each element of the list for the target value until a match is found or until all the elements have been searched. For a list with n items, the best case […]

Bubble Sort Algorithm [Java]

Bubble Sort Algorithm Bubble sort algorithm, sometimes referred to as sinking sort, is a simple sorting algorithm that repeatedly steps through the list to be sorted, compares each pair of adjacent items and swaps them if they are in the wrong order. The pass through the list is repeated until no swaps are needed, which […]

Binary Search Algorithm

Binary Search Algorithm Binary search algorithm requires already sorted collection. Binary search, (also known as half-interval search, logarithmic search, or binary chop) is a search algorithm that finds the position of a target value within a sorted array. Binary search compares the target value to the middle element of the array. If they are unequal, […]

Abstract Factory Design Pattern in Java

Overview The Abstract Factory Pattern is known as a creational pattern. Abstract Factory patterns work around a super-factory which creates other factories. It provides an interface for creating families of related or dependent objects without specifying their concrete classes. It has a level of indirection that abstracts the creation of families of related or dependent […]

Mediator Design Pattern in Java

Overview Mediator design pattern is a behavioral design pattern. It is used to provide a centralized communication medium between different objects in a system. The Gang of Four has indicated that the mediator pattern is to define an object that encapsulates how a set of objects interacts. They also mentioned that the mediator promotes lose […]

Observer Design Pattern in Java

Overview Observer Pattern is a behavioral type design pattern. According to GoF, the observer design pattern is;  The observer pattern defines a one-to-many dependency between objects so that when one object changes state, all its dependents are notified and updated automatically. An Object which is being watched by other objects is called Subject and Object which is […]

Command Design Pattern in Java

Overview The Command pattern is known as a behavioral pattern. Command design pattern is used to implement loose coupling in a request-response model. The definition of Command provided in the original Gang of Four book on Design Patterns states:  Encapsulate a request as an object, thereby letting you parameterize clients with different requests, queue or […]

Chain of Responsibility Design Pattern in Java

Overview Chain of Responsibility Pattern can be used when we want to give more than one object a chance to handle a request. The pattern can be used to achieve loose coupling in software design where the request can be passed through a chain of objects to process them, Based on state of chain object […]

Singleton Design Pattern in Java

Overview Singleton pattern is a design solution which application to have only one instance of any class in Java Virtual Machine. Singleton Patterns are used where we need only one object which can be accessed by all other classes and share them across application. Why Singleton Pattern? To restrict one single instance of a class […]

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