• Java instanceof

    Java instanceof In Java, instanceof is a keyword used for checking if a reference variable contains a given type of object reference or not(class or subclass or interface).It is known as a comparison operator where the instance is getting compared to type returning boolean true or false as in Java we do not have 0…

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  • Matrix

    In Mathematics, matrix is a 2-dimensional rectangular array which is filled either with numbers or symbols or expressions as its elements & has a row and column 1) Java Program for Matrix Addition,Subtraction & Multiplication :

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  • Factorial

    There are different ways to calculate factorial of number in Java. Following four programs illustrate Java program to calculate factorial of number using loop, iteration, recursion & ternary operator. 1) Simple Java program to calculate Factorial of a number using loop : 2) Java program to calculate Factorial of a number using Iteration : 3)…

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  • Armstrong Number

    Armstrong Number is a number that equals to the sum of its digits, each raised to a power. Armstrong number was discovered by mathematician Michael Frederick Armstrong (1941-2020) and is also known as narcissistic or Plus Perfect or pluperfect number. Armstrong numbers form the OEIS sequence A005188. Example : For one-digit : 1: 1^1 =…

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  • Prime Number

    Prime Number is a number greater than 1 and divided by 1 or itself only. Prime number can be divided only by itself or 1 and not by any other number. 0 and 1 are not a Prime Number and 2 is the only even Prime Number. Example of Prime Number : 2, 3, 5,…

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  • Palindrome

    For a String if the reverse of a String is the same as the original String, then that String is called a Palindrome String Example : Malayalam For a Number if the reverse of a Number is equal to the same Number, then that number is called a Palindrome Number Example : 4554, 1221 Following programs illustrate…

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