Rotate the given array in cycles
Objective: Given an array of integers, write a program to rotate the array in cyclic manner by one. Example: Int a [] = {1, 2, 3, 4, 5} Output: {2, 3, 4, 5, 1}...
Category: Beginner
Print First n numbers in Fibonacci Series
Objective: Write a program to print first n numbers in Fibonacci series. Fibonacci number: First two Fibonacci numbers are defined as 0 and 1 and every number after the first two is the sum...
Find the Area and Perimeter of Rectangle – Java Program
A rectangle is a quadrilateral with four right angles. Say rectangle is given with side’s length A and B Area of Rectangle = A * B Perimeter of rectangle = 2(A+B) Code: Run This Code Output: Area of Rectangle:...
Reverse the given String using Stack
Objective: Given a String, write a java program to reverse the string using Stack Example: Input: “tutorial horizon” Output: “noziroh lairotut” Recommended: Please read Stack Data Structure before continue to read. Approach: Initialize a...
Stack Data Structure – Introduction and Implementation
What is Stack?? Stack is an abstract data type (ADT) and very useful in programming. In computer science, a stack is an abstract data type that serves as a collection of elements. Majorly all the operations are done at only one...
Bubble Sort and Optimized Bubble Sort- Java Implementation
In this article we will discuss about what is bubble sort, why it is considered as one of the simplest sorting algorithm, what its complexity, how we can improve the bubble sort algorithm. What...
Find the Area of Triangle using base and height – Java Program
Objective: Given the base and height of a triangle, using math formula for calculating the area of triangle, write an java program to calculate the triangle area. Area of a Triangle: (Base * Height)/2...
Calculate Log2n without using built-in function
Objective: Given a number n, write a program to calculate Log2n without using built-in function. Example: N = 32 Log232 = 5 N = 64 Log264 = 6 Approach: Initialize result = 0. Keep...
Print First N Prime Numbers – Java Code
Objective: Given a number N, write a program to print first N prime numbers. What is Prime number:?? A prime number (or a prime) is a natural number greater than 1 that cannot be...
Print My IP Address – Java Code
Objective: Write a java program to print your IP address. Approach: Get the local host address of your system using getLocalHost() method. Use getHostAddress() method to get the IP address from local host address. Code:Run This Code...
Find the Circumference of a Circle – Java Program
Area of a circumference = 2πR Where π = 3.14 and R = radius of circle Example: Radius = 4.0 Area = 2*π*radius = 2*3.14*4 = 25.12 Java Code:Run This Code Output: Area of...
Check if two Strings are equal without using built-in function – Java
Objective– Given two strings, find out if they are equal or not without using any built-in function (without using equals() function in java). Example: String x=’tutorial’ and String y=’tutorial’ are equal – true String...
Remove Vowels from a given String
Objective: Given a String, remove all the vowels from the string. What Are Vowels? The letters A, E, I, O, and U are called vowels. The other letters in the alphabet are called consonants....
Linear Search Algorithm
Objective: Given an array [] of n elements and a element ‘x’, write a program to search an element ‘x’ in the array. Example: Input [] = {20, 30, 40, 10, 5, 2, 60,...
Floyd’s Triangle – Java Implementation
Floyd’s Triangle: Floyd’s triangle is a right angled triangular array of natural numbers. It named after Robert Floyd. Rows of the triangle filled by consecutive numbers. First row will have single number which is...