• 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

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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 = 12: 2^1 = 23: 3^1 = 3 So,1,2 & 3 are one-digit Armstrong…

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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, 7,…

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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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  • Fibonacci Series

    Number series in which next number is the sum of previous two numbers is called Fibonacci Series Example : 0, 1, 1, 2, 3, 5, 8, 13, etc. Fibonacci Series in Java can be written in following two ways : 1) Without Recursion2) With Recursion Following two programmes illustrate Fibonacci Series Using Recursion & without…

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