In this post, we will learn How to write a Merge sort program in Java? Merge sort is very much efficient than the simple sorting algorithms like the bubble sort, selection sort, and insertion sort. the only drawback is that it requires an additional array along with the input array that is sorted. How to… Read More »
In this post, We will learn How to write a Java Program to Reverse the first K elements of a Queue? First, let’s try to understand the problem statement in little more detail for better clarity: You have given an integer K and a Queue of Integers then How would you reverse the order of the… Read More »
In the previous post, How to delete the first node in a Doubly Linked List in Java? we learned how to delete the first node from LinkedList. In this post, We will learn How to delete the last node in a Doubly Linked List in Java? Logic is Very Simple: if List is Empty than throws NoSuchElementException Exception… Read More »
In his post, We will learn How to Remove/Delete the first node in a Doubly Linked List in Java? Logic is Very Simple: if List is Empty than throws NoSuchElementException Exception if List is not empty then head we will assign to temp Node if head == tail that means list has only one Node so nullify… Read More »
In Previous Post, How to insert a node at the beginning of a Doubly Linked List in Java ? we learned how to insert a Node at the beginning of a Doubly LinkedList. In this post, we will learn How to insert a node at the end of a Doubly Linked List in Java? Logic is very simple:… Read More »
In this post, We will learn How to insert a node at the beginning of a Doubly Linked List in Java? Logic is Very Simple: Initially, We assign head to the first pointer and if first is pointer is null that means LinkedList is empty so make newNode as tail Node so that head and tail both pointing… Read More »
In this post, We will learn about How to represent the Doubly Linked List in Java? We can easily understand how the Doubly Linked List represented with the help of the below diagram: It is called two ways Linked List. In Doubly Linked List We can navigate in both forward and backward direction that is not possible in… Read More »
In this post, We will talk and learn about What is left shift <<, right shift >> and Unsigned right shift >>> operator in Java? How are these useful? All Integer in Java are of signed type (negative numbers are represented in 2’s complementary notation), hence Java provides both signed and unsigned bit shift operators to… Read More »
In this post, We will talk and learn about the Iterator Design Pattern in Java. Key Points About Iterator Design Pattern : Iterator design pattern falls under behavioral patterns. This pattern is mainly used to provide a standard way to traverse through a group of Objects. Iterator pattern is widely used in the Java Collection framework. Iterator interface… Read More »
In this post, We will talk and learn about the Interpreter Design Pattern in Java. Key Points About Interpreter Design Pattern : Interpreter design pattern falls under behavioral design pattern. This pattern is mainly used to define a grammatical representation for a language and provides an interpreter to deal with this grammar. One of the best examples of… Read More »