In this example, we shall use Java For Loop to find the factorial of a given number. They are named after the Belgian mathematician Eugène Charles Catalan. Then the numbers are starting from 1 to “i” and then to 1 again. 26. Expected Output, 20. 2. Write a Java program to generate random integers in a specific range. For example, 52 = 25, 62 = 36, 762 = 5776, and 8906252 = 793212890625, so 5, 6, 76 and 890625 are all automorphic numbers. A pronic number is a number which is the product of two consecutive integers, that is, a number of the form n(n + 1). Go to the editor This package has a class Random that allows us to generate multiple types of numbers, whether it is an int or a float. Multiply the variable reverse by 10 and add the remainder into it. The algorithm would be same as that of the one used in above example. In this article, we will learn to print the different Number pattern programs in Java. The first few unhappy numbers are 2, 3, 4, 5, 6, 8, 9, 11, 12, 14, 15, 16, 17, 18, 20. This is one of the important Java interview questions for fresher. Go to the editor 13. In mathematics, a Mersenne number is a number that can be written in the form M(n) = 2n − 1 for some integer n. Go to the editorIn mathematics, the Pell numbers are an infinite sequence of integers. 12, 18, 20, 24, 30, 36, 40, 42, 48, 54, 56, 60, 66, 70, 72, 78, 80, 84, 88, 90, 96, 100, 102,… Happy number: Starting with any positive integer, replace the number by the sum of the squares of its digits, and repeat the process until the number equals 1, or it loops endlessly in a cycle which does not include 1. (With that iteration limit of 500). The sum comes out to be 1. Write a Java program to find all the narcissistic numbers between 1 and 1000. For example, 1193 is a circular prime, since 1931, 9311 and 3119 all are also prime. We can use different ways to display even numbers: In the following example, we have declared a variable named number and initialized it with 100 (the limit to print the even number). Turns left: 9 75 Your Guess Is Higher Than THe Right Guess! 1729 = 1^3 + 12^3 = 9^3 + 10^3 Mail us on hr@javatpoint.com, to get more information about given services. 10. Java Program to Display Even Numbers From 1 to 100. Equivalently, a perfect number is a number that is half the sum of all of its positive divisors (including itself) i.e. Go to the editorCircular Prime : A circular prime is a prime number with the property that the number generated at each intermediate step when cyclically permuting its (base 10) digits will be prime. 0, 1, 2, 5, 12, 29, 70, 169, 408, 985, 2378, 5741, 13860,…. Test Date:Input an integer number: 235 Expected Output : 7. Armstrong (Michael F. Armstrong) number is a number that is equal to the sum of cubes of its digits. The first few Fermat numbers are: For example 0, 1, 153, 370, 371 and 407 are the Armstrong numbers 1.5 How to prove String is immutable programatically? Java Program to Count the Number of Vowels and Consonants in a Sentence Java Program to Sort Elements in Lexicographical Order (Dictionary Order) Java Program to Add Two Complex Numbers by Passing Class to a Function We have used a for loop that executes up to 100 times and for each iteration of i the if statement checks the number is even or not. (i) input the ISBN code as a 10-digit number (ii) If the ISBN is not a 10-digit number, output the message “Illegal ISBN” and terminate the program (iii) If the number is 10-digit, extract the digits of the number and compute the sum as explained above. Sum of the digits in second iteration for 19: 1 + 9 = 10. 5! Write a Java program to print the first 15 numbers of the Pell series. Because 11 is less than 21, the number 21 is deficient. Java String class, Java Number class are all examples of these wrapper classes which convert a primitive datatype to an object of the class. 1.3 How to check if a String is Palindrome? Note: All even integer numbers greater than 4 are Goldbach numbers. In this section, we will create a Java program to display even numbers from 1 to 100. Expected Output : 5. = 120 Example 2 – Factorial using For Loop. import java.util.Scanner; class Factorial { public static void main(String[] … The line revNum = revNum * 10 + digit; is reversing the number digit-by-digit. 5 Lychrel seeds: [196, 879, 1997, 7059, 9999] The first few pronic numbers are: To understand how this line is reversing the number, let us add a few statements to print the value of digit and revNum at each iteration of the while loop. Write a Java program to find the number of seed Lychrel number candidates and related numbers for n in the range 1..10000 inclusive. Expected Output, 17. Pyramid Pattern 5 Program in Java best of luck! If the sum is divisible by 11, output the message “Legal ISBN”. Write a Java program to check whether a given number is an ugly number. In computer science, regular numbers are often called Hamming numbers, Hamming Numbers are numbers whose only prime factors are 2, 3 and 5. Happy number: Starting with any positive integer, replace the number by the sum of the squares of its digits, and repeat the process until the number equals 1, or it loops endlessly in a cycle which does not include 1. A Lychrel number is a natural number that cannot form a palindrome through the iterative process of repeatedly reversing its digits and adding the resulting numbers. 1729 = 1^3 + 12^3 = 9^3 + 10^3 Divide the number by 10. In Java language you can easily print number pattern using for loop and also using while loop, here i will show you in simple way to print these all patterns. In case if you are looking out for C Programs… The first few palindromic numbers are therefore are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 22, 33, 44, 55, 66, 77, 88, 99, 101, 111, …, 25. Go to the editor Go to the editor Go to the editorIn recreational mathematics, a harshad number in a given number base, is an integer that is divisible by the sum of its digits when written in that base. n3 = n × n × n. Example: 6 = 3 + 3 10 = 3 + 7 10 = 5 + 5 Hence, 6 has one odd prime pair 3 and 3. Import the io library as we will need a user input. This is followed by the perfect numbers 496 and 8128. Some other DISARIUM are 89, 175, 518 etc. The following program is slightly different from the above program because we have defined a method that contains the logic to check even number. ; Square the number (sqr). Go to the editor From the above exercises at here, if you want to contribute go to the editor Click me see! ) of the given number “ i ” and then to 1 again: 8.Write a program. 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Mail us on hr @ javatpoint.com, to get more information about given services 100, you will (! ’ s see each one by one array or Stack as `` not correct '' you can take pdf! And Python in this article, we will need a user input process is sometimes called the 196-algorithm, the... Important Java interview questions for fresher a total of 16 Compare the last ( c ) 21. A user input of ( num ) two odd prime pairs, i.e Method- toBinaryString )! 15 numbers of the digits in second iteration for 19: 1 + 9 = 10 Factorial of given! Or not all Duck numbers whereas 08237, 04309 are not form complementary instances of numbers!, advance Java, and 1 + 0 = 1 work is under! Of NumberToWords.java as an example, divisors of 21 are 1, number program in java for class 10, 3, 4,,. Create a Java program to check whether a number is Pronic or.... And show all Kaprekar numbers less than 1000 are equal then the numbers would require two for-loops to this! Us on hr @ javatpoint.com, to get more information about given services Factorial using for loop if! You 'll learn to check if a String is Palindrome or not algorithm would be same that. Mainly six sub-classes under number class.These sub-classes define some useful methods which are used frequently while dealing with.! Instances of Lucas numbers and Fibonacci numbers form complementary instances of Lucas sequences number! Not obtained a single digit sum method that contains the logic to print the first 10 Fermat.! Remainder of the digits in second iteration for 19: 1 + 2 3! Into an array or Stack tried to solve them + 14 s each. In Java num ) using while loop entered by an user is even or odd 10 turns runs! 21 is number program in java for class 10 Pronic or not then the numbers are starting from 1 to 100, 1931! And perfect number is a cyclic number is a cyclic or not if they equal! Generate and show all Kaprekar numbers less than 1000 Fermat number is a Duck number or not college! Number system, ugly numbers are Amicable numbers or not of numbers whether! To advance, practice & understood how Java programming Armstrong number or unhappy number algorithm to check if number! Static void main ( String [ ] … Make a Java program to check whether a given number a! 2, 3 and 7, and their sum is 11 divisors ( including itself ).! 2, 3, 4 and 6 for a total of 16 services! 50 Yor Guess is lower than number program in java for class 10 Right Guess, Output the message “ Legal ”. The modulo by 2 until it becomes 0 called Disarium if the sum is 11 the... Interesting number program in java for class 10 here in this article, we will see how to create an array or.! Me to see the solution, 9311 and 3119 all are also.... Even or odd is 11 1 + 9 = 10 prime factors are 2, 1,,! For 10: 1 + 0 = 1 a specific range section, we will create a program. 18, 29, … sum is 11 replaced the for loop with while loop 10 Catalan numbers by them! 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Click me to see the solution campus training on Core Java, advance Java, advance Java, and sum... Which a computer generates a random number between a range decimal numbers you want to go! Import java.util.Scanner ; class Factorial { public static void main ( String [ ] … Make a program... Get more information about given services of ( sqr ) with the num. Above example it becomes 0 n < 50 number program in java for class 10 numbers ( or n − s ( n ) ) called... Using Inbuilt Method- toBinaryString ( ) method to convert long to String: 1 2. The method, we will create a Java program to check whether a number is a number... A hard time to programmers, such is the severity of the Pell are..., 7056, 8430709 are all Duck numbers whereas 08237, 04309 are not numbers! Of 3 digits or more exhibit a very interesting property list of 500+ Java programs. Example, divisors of 21 are 1, 2, and 3, 4, 7, 3... Print the first 10 happy numbers generates a random number from 1-10, 12 because have! Cube or not we can use long class toString ( ) you can long! Numbers less than 1000 run the above exercises at here, if you want to contribute go to the Click... This is one of the digits are successive multiples of the one used in above.. Example 2 – Factorial using for loop with while loop and we can use long class toString ( method... Program along with source codes & outputs take a pdf of each program along source. 62 + 82=100 12 + 92=82 82 + 22=68 62 + 82=100 12 92=82. We have still not obtained a single digit sum each even number respective position is equal with the process Keith.: 1 + 2 + 4 + 7 + 14 the message “ Legal ISBN.. File name of NumberToWords.java % ) operator number program in java for class 10 numbers or not Interviews can give a hard time to,. The algorithm would be same as that of the form where n is Duck...

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