Java Articles - Page 654 of 745

To find the sum of elements of an array.create an empty variable. (sum)Initialize it with 0 in a loop.Traverse through each element (or get each element from the user) add each element to sum.Print sum.Exampleimport java.util.Arrays; import java.util.Scanner; public class SumOfElementsOfAnArray {    public static void main(String args[]){       System.out.println("Enter the required size of the array :: ");       Scanner s = new Scanner(System.in);       int size = s.nextInt();       int myArray[] = new int [size];       int sum = 0;       System.out.println("Enter the elements of the array one by one ");       for(int i=0; i

Recursion is the process of repeating items in a self-similar way. In programming languages, if a program allows you to call a function inside the same function, then it is called a recursive call of the function.ExampleFollowing is an example to find Fibonacci series of a given number using a recursive functionpublic class FibonacciSeriesUsingRecursion {    public static long fibonacci(long number) {       if ((number == 0) || (number == 1)) return number;          else return fibonacci(number - 1) + fibonacci(number - 2);       }       public static void main(String[] args) {          for (int counter = 0; counter

Recursion is the process of repeating items in a self-similar way. In programming languages, if a program allows you to call a function inside the same function, then it is called a recursive call of the function.ExampleFollowing is an example to find Fibonacci series of a given number using a recursive functionpublic class FibonacciSeriesUsingRecursion {    public static long fibonacci(long number) {       if ((number == 0) || (number == 1)) return number;          else return fibonacci(number - 1) + fibonacci(number - 2);       }       public static void main(String[] args) {          for (int counter = 0; counter

In this article we will learn to print Pascal's triangle in Java. Pascal's triangle is one of the classic examples taught to engineering students. It has many interpretations. One of the famous ones is its use with binomial equations. All values outside the triangle are considered zero (0). The first row is 0 1 0 whereas only 1 acquires a space in Pascal’s triangle, 0s are invisible. Second row is acquired by adding (0+1) and (1+0). The output is sandwiched between two zeroes. The process continues till the required level is achieved. Problem Statement Write a program in Java to print ... Read More

In this article we will learn to print Pascal's triangle in Java. Pascal's triangle is one of the classic examples taught to engineering students. It has many interpretations. One of the famous ones is its use with binomial equations. All values outside the triangle are considered zero (0). The first row is 0 1 0 whereas only 1 acquires a space in Pascal’s triangle, 0s are invisible. Second row is acquired by adding (0+1) and (1+0). The output is sandwiched between two zeroes. The process continues till the required level is achieved. Problem Statement Write a program in Java to print ... Read More

Floyd's triangle, named after Robert Floyd, is a right-angled triangle, which is made using natural numbers. It starts at 1 and consecutively selects the next greater number in the sequence.AlgorithmTake a number of rows to be printed, n.Make outer iteration I for n times to print rowsMake inner iteration for J to IPrint KIncrement KPrint NEWLINE character after each inner iterationExampleimport java.util.Scanner; public class FloyidsTriangle {    public static void main(String args[]){       int n, i, j, k = 1;       System.out.println("Enter the number of lines you need in the FloyidsTriangle");       Scanner sc ... Read More

Floyd's triangle, named after Robert Floyd, is a right-angled triangle, which is made using natural numbers. It starts at 1 and consecutively selects the next greater number in the sequence.AlgorithmTake a number of rows to be printed, n.Make outer iteration I for n times to print rowsMake inner iteration for J to IPrint KIncrement KPrint NEWLINE character after each inner iterationExampleimport java.util.Scanner; public class FloyidsTriangle {    public static void main(String args[]){       int n, i, j, k = 1;       System.out.println("Enter the number of lines you need in the FloyidsTriangle");       Scanner sc ... Read More

The Set interface does not allow duplicate elements, therefore, create a set object and try to add each element to it using the add() method in case of repetition of elements this method returns false − If you try to add all the elements of the array to a Set, it accepts only unique elements so, to find duplicate characters in a given string. Problem Statement Given a string, write a program in Java to delete duplicate characters from a given string − Input TUTORIALSPOINT Output Indices of the duplicate characters in the given string :: Index :: ... Read More

The Set interface does not allow duplicate elements, therefore, create a set object and try to add each element to it using the add() method in case of repetition of elements this method returns false − If you try to add all the elements of the array to a Set, it accepts only unique elements so, to find duplicate characters in a given string. Problem Statement Given a string, write a program in Java to delete duplicate characters from a given string − Input TUTORIALSPOINT Output Indices of the duplicate characters in the given string :: Index :: ... Read More

The java.util.Scanner class is a simple text scanner which can parse primitive types and strings using regular expressions.1. A Scanner breaks its input into tokens using a delimiter pattern, which by default matches whitespace.2. A scanning operation may block waiting for input.3. A Scanner is not safe for multi-threaded use without external synchronization.The nextInt() method of the Scanner class is used to read an integer value from the source.Exampleimport java.util.Scanner; public class ReadingNumbersFromUser {    public static void main(String args[]){       Scanner sc = new Scanner(System.in);       System.out.println("Enter a number ::");       int num ... Read More