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  • Rotate matrix by 90 degrees in java
    Algorithm Interview
    20 May

    Rotate Matrix by 90 degrees in java

    In this article, we will look into another interesting problem related to 2D Arrays. Given a Matrix of N X N Dimension we have to Rotate matrix by 90 degrees. We will perform Rotation both Clockwise i.e. Right Rotation and Anti-Clockwise i.e. Left Rotation respectively. We will discuss each operation in detail along with a […]

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  • Basic java programs Core Java interview Number
    09 October

    Java program to find first and last digit of a number

    In this article, we are going to find first and last digit of a number in Java. To find first and last digit of any number, we can have several ways like using modulo operator or pow() and log() methods of Math class etc. Let’s see some examples. Before moving to example, let’s first create […]

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  • Basic java programs Core Java interview Number
    30 September

    Find Perfect Number in Java

    In this article, we are going to find whether a number is perfect or not using Java. A number is called a perfect number if the sum of its divisors is equal to the number. The sum of divisors excludes the number. There may be several approaches to find the perfect number. For example: 28 […]

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  • Basic java programs Core Java interview Number
    28 September

    Number guessing game in java

    In this article, we will implement Number guessing game in java. The number guessing game is based on a concept where player guesses a number between a range. If player guesses the exact number then player wins else player looses the game. Since this game provides limited attempts, so, player must guess the number with […]

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  • Basic java programs Core Java interview Number
    03 October

    Happy Number program in Java

    In this article, we are going to learn to find Happy Number using Java. Let’s first understand, what is Happy Number? What is a Happy Number? A number which leaves 1 as a result after a sequence of steps and in each step number is replaced by the sum of squares of its digit. For […]

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  • Core Java interview java programs
    30 December

    Rock Paper Scissors Game in Java

    Learn about how to implement Rock Paper Scissors game in java.

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  • Basic java programs Core Java interview Number
    28 September

    How to find Magic Number in Java

    In this article, we are going to learn to find Magic Number using Java. Let’s first understand, what is Magic Number? What is a Magic Number? A number which leaves 1 as a result after a sequence of steps and in each step number is replaced by the sum of its digits. For example, if […]

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  • Core Java interview Java Collections
    17 March

    PriorityQueue in Java 8

    In this post, we will see about Java 8 PriorityQueue. When the objects are supposed to be processed on the basis of their priority, in that scenario we use PriorityQueue. It’s a special type of queue (also, unbound queues) where the elements can be ordered either as per their natural ordering or based on a […]

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  • Core Java interview java programs
    05 October

    Print prime numbers from 1 to 100 in java

    In this program, we will print prime numbers from 1 to 100 in java. A prime number is a number which has only two divisors 1 and itself. To check if the number is prime or not, we need to see if it has any other factors other than 1 or itself. If it has, […]

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