Programming Articles - Page 1724 of 3363

In Java, state of the immutable object can’t be modified after it is created but definitely reference other objects. They are very useful in multi-threading environment because multiple threads can’t change the state of the object so immutable objects are thread-safe. Immutable objects are very helpful to avoid temporal coupling and always have failure atomicity and also helpful in multiple threading. Why though? because no one can change the object right? So, it becomes thread-safe, it means it will not cause any unexpected issues when different parts of the program are trying to access that particular object. On the other ... Read More

In this tutorial, we will be discussing a program to find maximum parent children sum in Binary treeFor this we will be provided with a binary tree. Our task is to add up the parent node with its children nodes and finally find the maximum of all of that and print it out.Example Live Demo#include using namespace std; struct Node {    int data;    struct Node *left, *right; }; //inserting nodes struct Node* newNode(int n) {    struct Node* root = new Node();    root->data = n;    root->left = root->right = NULL;    return root; } int maxSum(struct ... Read More

In this tutorial, we will be discussing a program to find maximum of sum and product of digits until number is reduced to a single digitFor this we will be provided with a random number. Our task is to find and print out the maximum of sum and product of the digits of the given number until it coverts to a single digitExample Live Demo#include using namespace std; //converting number to single digit by adding long repeatedSum(long n) {    if (n == 0)       return 0;    return (n % 9 == 0) ? 9 : (n % ... Read More

In this tutorial, we will be discussing a program to find the maximum of smallest possible area that can get with exactly k cut of given rectangular.For this we will be provided with the sides of the rectangle and the number of cuts that can be made. Our task is to calculate the smallest area that can be achieved by making the given number of cuts.Example Live Demo#include using namespace std; void max_area(int n, int m, int k) {    if (k > (n + m - 2))       cout

CountDownLatch and CyclicBarrier both used in multithreading environment and they both are part of.As per Java Doc −CountDownLatch − A synchronization aid that allows one or more threads to wait until a set of operations being performed in other threads completes.CyclicBarrier − A synchronization aid that allows a set of threads to all wait for each other to reach a common barrier point.Sr. No.KeyCyclicBarrierCountDownLatch1BasicA synchronization aid that allows a set of threads to all wait for each other to reach a common barrier point.A synchronization aid that allows one or more threads to wait until a set of operations being ... Read More

In this tutorial, we will be discussing a program to find HCF (highest common factor) of two numbers.For this we will be provided with two numbers. Our task is to find the highest common factor (HCF) of those numbers and return it.Example Live Demo#include //recursive call to find HCF int gcd(int a, int b){    if (a == 0 || b == 0)       return 0;    if (a == b)       return a;    if (a > b)       return gcd(a-b, b);    return gcd(a, b-a); } int main(){    int a = ... Read More

In this tutorial, we will be discussing a program to find greater value between a^n and b^n.For this we will be provided with three numbers. Our task is to calculate a^n and b^n and return back the greater of those values.Example Live Demo#include using namespace std; //finding the greater value void findGreater(int a, int b, int n){    if (!(n & 1)) {       a = abs(a);       b = abs(b);    }    if (a == b)       cout b)       cout

In this tutorial, we will be discussing a program to find GCD and HCF of two numbers.For this we will be provided with two numbers. Our task is to find the GCD or HCF (highest common factor) for those given two numbers.Example Live Demo#include using namespace std; int gcd(int a, int b){    if (a == 0)       return b;    if (b == 0)       return a;    if (a == b)       return a;    if (a > b)       return gcd(a-b, b);    return gcd(a, b-a); } int main(){    int a = 98, b = 56;    cout

Kafka and JMS both are messaging system. Java message service is an api which are provided by Java. It is used for implementing messaging system in your application. JMS supports queue and publisher /subscriber(topic) messaging system . With queues, when first consumer consumes a message, message gets deleted from the queue and others cannot take it anymore. With topics, multiple consumers receive each message but it is much harder to scale.Kafka is a generalization of these two concepts - it allows scaling between members of the same consumer group, but it also allows broadcasting the same message between many different ... Read More

JMS is an acronym Java message service. Java message service is an api which are provided by Java. It is used for implementing messaging system in your application.JMS is an API or specification which does not contain implementation therefore to use JMS have to some third party service provider like ActiveMq , Weblogic messaging and etc.JMS support two types of messaging domain −Point to Point MessagingPublish /Subscribe messaging  Sr. No.KeyPoint to Point MessagingPublish /Subscribe1BasicIt is one to one destination of message. Message sent into the queue and that message can be read by only one receiver.It is one to many ... Read More