3, 5, 17, 257, 65537, 4294967297, 18446744073709551617, … In number theory, an abundant number is a number for which the sum of its proper divisors is greater than the number itself. Pyramid Pattern 5 Program in Java Java Numbers: Exercise-15 with Solution. Go to the editor Number 171 is a Harshad Number because the sum of digits 1 and 7 and 1 is 9(1+7+1) and 171 is divisible by 9. 26. In this post I have taken some different number pattern programs in java and tried to solve them . Please mail your requirement at hr@javatpoint.com. Similarly, 10 has two odd prime pairs, i.e. Expected Output : You can take a pdf of each program along with source codes & outputs. In case if you are looking out for C Programs… 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. Expected Output, 19. Write a Java program to find all the narcissistic numbers between 1 and 1000. Go to the editor 39312 = 2^3 + 34^3 = 15^3 + 33^3 In each step take the modulo by 2 and store the remainder into an array or stack. 0, 2, 6, 12, 20, 30, 42, 56, 72, 90, 110, 132, 156, 182, 210, 240, 272, 306, 342, 380, 420, 462 … etc. A number will be called Disarium if the sum of its digits powered with their respective position is equal with the number itself. σ1(n) = 2n. The computer will respond as "Correct Guess" if guess is correct otherwise respond as "not correct". The first Catalan numbers for n = 0, 1, 2, 3, … are 1, 1, 2, 5, 14, 42, 132, 429, 1430, 4862, 16796, 58786, 208012, 742900, 2674440, 9694845, 35357670, 129644790, 477638700, 1767263190, 6564120420, 24466267020, 91482563640, 343059613650, 1289904147324, 4861946401452, 9. Go to the editor 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. Example: Number 200 is a Harshad Number because the sum of digits 2 and 0 and 0 is 2(2+0+0) and 200 is divisible by 2. Inside the while loop, we are extracting each digit of the number into the int variable digit.The extraction of digits of a number is explained in detail here.. Sum of the digits in second iteration for 19: 1 + 9 = 10. It is not an ugly number. © Copyright 2011-2018 www.javatpoint.com. n3 = n × n × n. As 11+32+53 = 135 (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. Write a Java program to check two numbers are Amicable numbers or not. A cyclic number is an integer in which cyclic permutations of the digits are successive multiples of the number. Expected Output. Input a number: 8 In this example, we shall use Java For Loop to find the factorial of a given number. Java Program to Check Whether a Number is Even or Odd. Write a Java program to check whether a given number is an ugly number. There are three ways to reverse a number … Go to the editor Because 11 is less than 21, the number 21 is deficient. In our case, the range is 1 to 10. Write a Java program to classify Abundant, deficient and perfect number (integers) between 1 to 10,000. For example, 1193 is a circular prime, since 1931, 9311 and 3119 all are also prime. JavaTpoint offers too many high quality services. The value 2n − σ(n) (or n − s(n)) is called the number's deficiency. Turns left: 8 65 Your Guess Is Higher Than THe Right Guess! This process is sometimes called the 196-algorithm, after the most famous number associated with the process. In mathematics, a Mersenne number is a number that can be written in the form M(n) = 2n − 1 for some integer n. The program runs on the following algorithm to check whether a number is Pronic or not. 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. 40 Pattern Programs in Java – Number, Star, Alphabet Patterns June 9, 2020 by javainterviewpoint Leave a Comment In this article, we will learn to print the different Pattern Programs in Java, it is the most famous interview question as it tests … A circular prime with at least two digits can only consist of combinations of the digits 1, 3, 7 or 9, because having 0, 2, 4, 6 or 8 as the last digit makes the number divisible by 2, and having 0 or 5 as the last digit makes it divisible by 5. The first few Fermat numbers are: 5 Lychrel palindromes: [196, 879, 1997, 7059, 9999]. 1729 = 1^3 + 12^3 = 9^3 + 10^3 Number Counting [(integers) between 1 to 10,000]: (With that iteration limit of 500). 14. 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). Go to the editor Magic Number in Java. So we will have (rows-i)*2 whitespaces before we print any number. First 10 ugly numbers are 1, 2, 3, 4, 5, 6, 8, 9, 10, 12. 13. ; Square the number (sqr). 13832 = 2^3 + 24^3 = 18^3 + 20^3 1729 = 1^3 + 12^3 = 9^3 + 10^3 Within the function, we used the If statement to check whether the given number is greater than Zero or Not and if it is True then statements inside the If block will be executed. In this post, we will see how to convert long to String in java. Mail us on hr@javatpoint.com, to get more information about given services. 11. An unhappy number is a number that is not happy. Expected Output : 5. Click me to see the solution. Go to the editor 1729 = 1^3 + 12^3 = 9^3 + 10^3 For example 3210, 7056, 8430709 are all duck numbers whereas 08237, 04309 are not. The sum comes out to be 1. This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. Write a Java program to check a number is a cube or not. In the following program, we have replaced the for loop with while loop. The first four Mersenne primes are 3, 7, 31, and 127, 23. Go to the editor Write a Java program to find and print the first 10 happy numbers. 3 and 7, 5 and 5. For example 0, 1, 153, 370, 371 and 407 are the Armstrong numbers 142857 × 4 = 571428 = 120 Example 2 – Factorial using For Loop. Therefore, while using a wrapper class you just need to pass the value of the primitive data … The first perfect number is 6. Expected Output, 18. Input Data: Make A Multiplication Table Using Java Program. Write a Java program to check if a number is palindrome or not. 6. Example: 19 is a happy number Pronic Number. Write a Java program to print the first 15 numbers of the Pell series. Write a Java program to check whether a given number is a Disarium number or unhappy number. 20683 = 10^3 + 27^3 = 19^3 + 24^3 By convention, 1 is included. Input Data: java a program to create an array of 10 integers. A Disarium number is a number defined by the following process : Test Date:Input an integer number: 235 Abundant number: 2488, 3. Go to the editor To convert an integer to binary divide the number by 2 until it becomes 0. Example : Let’s look into the below possible number pattern programs Expected Output This tutorial will teach you how to create a program that will convert a number and will become words in java. Java long to String. ; Compare the last (c) digits of (sqr) with the (num). 12. Write a Java program to check whether a given number is a happy number or unhappy number. Input a number: 35 Go to the editorIn recreational mathematics, a Keith number or repfigit number (short for repetitive Fibonacci-like digit) is a number in the following integer sequence: The course is designed to give you a head start into Java programming and train you for both core and advanced Java concepts along with various Java frameworks like Hibernate & Spring. Inside the method, we have used nested-if statement. Go to the editor Java Program 10. * 10000 For example: Some other DISARIUM are 89, 175, 518 etc. There are lot of ways to convert long to String.Let’s see each one by one. Sum of the digits in third iteration for 10: 1 + 0 = 1. 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 142857 × 3 = 428571 Write a Java program to check whether a number is a Harshad Number or not. 32832 = 4^3 + 32^3 = 18^3 + 30^3 50 Yor Guess is lower than the right guess! Go to the editor Sum of its digits powered with their respective position is equal to the original number. ; Count the number of digits of (num) using while loop (c). JavaTpoint offers college campus training on Core Java, Advance Java, .Net, Android, Hadoop, PHP, Web Technology and Python. Write a Java program to display first 10 lucus numbers. 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, 29.Write a Program in Java to check whether a number is a Lucky Number or not. ; If they are equal then the number is Automorphic else not. The next perfect number is 28 = 1 + 2 + 4 + 7 + 14. An Automorphic number is a number whose square ends with the same digits as the original number.E.g – 25, 76, 376 etc.. Steps to Check Automorphic Number in Java. Java Interviews can give a hard time to programmers, such is the severity of the process. The integer 12 is the first abundant number. Java programs: Basic Java programs with examples & outputs. Input a number : 110 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. 14, 19, 28, 47, 61, 75, 197, 742, 1104, 1537, 2208, 2580, 3684, 4788, 7385, 7647, 7909, 31331, 34285, 34348, 55604, 62662, 86935, 93993, 120284, 129106, 147640, 156146, 174680, 183186, 298320, 355419, 694280, 925993, 27. A pronic number is a number which is the product of two consecutive integers, that is, a number of the form n(n + 1). Write a Java program check whether a number is an Automorphic number or not. Accept values from the user in that array. 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. NumberOfDigits Class Analysis: In this Java Program to Count Number of Digits in a Number, First we declared an integer function DigitsCount with one argument. Go to the editor 64232 = 17^3 + 39^3 = 26^3 + 36^3, 22. import java.util.Scanner; class Factorial { public static void main(String[] … Java Program to Add two Numbers By Chaitanya Singh | Filed Under: Java Examples Here we will see two programs to add two numbers, In the first program we specify the value of both the numbers in the program … The java program to calculate average of three numbers has been written in five different ways such as Scanner class, direct value initialization, Buffered Reader class, Command Line argument, methods, and using Constructor. In this section, we will create a Java program to display even numbers from 1 to 100. Expected Output : 8.Write a Java program to print out the first 10 Catalan numbers by extracting them from Pascal's triangle. The line revNum = revNum * 10 + digit; is reversing the number digit-by-digit. Write a Java program to check whether a number is a Duck Number or not. The following program is slightly different from the above program because we have defined a method that contains the logic to check even number. Its proper divisors are 1, 2, and 3, and 1 + 2 + 3 = 6. Here we covered over the list of 500+ Java simple programs for beginners to advance, practice & understood how java programming works. In computer science, regular numbers are often called Hamming numbers, Hamming Numbers are numbers whose only prime factors are 2, 3 and 5. Expected Output, 17. Using Long.toString() You can use Long class toString() method to convert long to String. Write a Java program to check whether a given number is a happy number or unhappy number. Expected Output, 21. Question: Write a Program in Java to input a number and check whether it is a Fascinating Number or not.. Expected Output, 16. Go to the editor Sample Input: 135. The first few deficient numbers are: 0, 1, 2, 5, 12, 29, 70, 169, 408, 985, 2378, 5741, 13860,…. Eureka! Developed by JavaTpoint. Our logic to print the numbers would require two for-loops to achieve this. Write a Java program to generate and show the first 15 narcissistic decimal numbers. Test Data Note: All even integer numbers greater than 4 are Goldbach numbers. 10. Expected Output : 7. 4104 = 2^3 + 16^3 = 9^3 + 15^3 The first few unhappy numbers are 2, 3, 4, 5, 6, 8, 9, 11, 12, 14, 15, 16, 17, 18, 20. Then the numbers are starting from 1 to “i” and then to 1 again. Write a Program in Java to check whether a number is a Keith Number or not. The first few terms of the sequence are : Go to the editorAmicable numbers are two different numbers so related that the sum of the proper divisors of each is equal to the other number. 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. [crayon-6004c9d71379f746741040/] In … Example: 6 = 3 + 3 10 = 3 + 7 10 = 5 + 5 Hence, 6 has one odd prime pair 3 and 3. Go to the editor In number system, ugly numbers are positive numbers whose only prime factors are 2, 3 or 5. Expected Output, 15. Go to the editor Here in this article, we are going to talk about the Number class and its methods in Java programming. Go to the editor Go to the editor 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. The first few abundant numbers are: Output: Guess a number between 1 to 100, You will have 10 turns! 5! 62 + 82=100 Expected Output : The sequence of Lucas numbers is: 2, 1, 3, 4, 7, 11, 18, 29, …. 1. Go to the editor To learn the Java even number program, you must have the basic knowledge of Java for loop and if statement.. We can use different ways to display even numbers: 1882 is indeed a Magic Number. 142857 × 6 = 857142 Write a Java program to check if a given number is circular prime or not. For example 175 is a Disarium number : Equivalently, a perfect number is a number that is half the sum of all of its positive divisors (including itself) i.e. In our case, the range is 1 to 10. 153 = 13 + 53 + 33, 24. We have still not obtained a single digit sum. Go to the editor Notice that every row has 2*r-1 numbers. If the sum is divisible by 11, output the message “Legal ISBN”. 4104 = 2^3 + 16^3 = 9^3 + 15^3 Do not submit any solution of the above exercises at here, if you want to contribute go to the appropriate exercise page. 142857 × 5 = 714285 In number theory, a narcissistic number is a number that is the sum of its own digits each raised to the power of the number of digits. 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 this section, we will create a Java program to display even numbers from 1 to 100. Calculate the square root of number and taking floor of the number by typecasting it to; Find the product of the squareRoot and (squareRoot + 1), and then compare the product with the number. 40033 = 9^3 + 34^3 = 16^3 + 33^3 Write a Java program to check a number is a cyclic or not. In combinatorial mathematics, the Catalan numbers form a sequence of natural numbers that occur in various counting problems, often involving recursively-defined objects. The sequence of Pell numbers starts with 0 and 1, and then each Pell number is the sum of twice the previous Pell number and the Pell number before that. Go to the editor First, we find the remainder of the given number by using the modulo (%) operator. java.util.Random is a package that comes with Java, and we can use it to generate a random number between a range. 1.3 How to check if a String is Palindrome? 46683 = 3^3 + 36^3 = 27^3 + 30^3 Java Program to Print Number Pattern. Take a number as input (num). Write a Java program to check whether a number is a Pronic Number or Heteromecic Number or not. Fascinating Numbers : Some numbers of 3 digits or more exhibit a very interesting property. The property is such that, when the number is multiplied by 2 and 3, and both these products are concatenated with the original number, all digits … * 100000 2. Lucas numbers and Fibonacci numbers form complementary instances of Lucas sequences. Duration: 1 week to 2 week. This will be done using if...else statement and ternary operator in Java. Here are some examples of Ramanujan numbers : ANALYSIS. They are named after the Belgian mathematician Eugène Charles Catalan. So, now let's start this tutorial! Got a question for us? The first few pronic numbers are: Equivalently, the number 6 is equal to half the sum of all its positive divisors: ( 1 + 2 + 3 + 6 ) / 2 = 6. Actually, the binary number consists of only 0 and 1. Expected Output. Write a Java program to check whether a number is a Duck Number or not. Write a Java program to generate random integers in a specific range. In mathematics, a Fermat number is a positive integer of the form Note: A Duck number is a number which has zeroes present in it, but there should be no zero present in the beginning of the number. 4. Go to the editor Deficient number: 7508 Input Data: Run the above Java program, and you shall get the following output. Go to the editor This is followed by the perfect numbers 496 and 8128. best of luck! Write a Program in Java to check whether a number is an Armstrong Number or not. The first ten amicable pairs are: (220, 284), (1184, 1210), (2620, 2924), (5020, 5564), (6232, 6368), (10744, 10856), (12285, 14595), (17296, 18416), (63020, 76084), and (66928, 66992). For example 3210, 7056, 8430709 are all duck numbers whereas 08237, 04309 are not. In mathematics, an automorphic number is a number whose square "ends" in the same digits as the number itself. 1. 5 Lychrel seeds: [196, 879, 1997, 7059, 9999] The first few Lychrel numbers are 196, 295, 394, 493, 592, 689, 691, 788, 790, 879, 887, ... . Perfect number: In number system, a perfect number is a positive integer that is equal to the sum of its proper positive divisors, that is, the sum of its positive divisors excluding the number itself. //http://introcs.cs.princeton.edu/java/13flow/Ramanujan.java.html There are mainly six sub-classes under Number class.These sub-classes define some useful methods which are used frequently while dealing with numbers. Scala Programming Exercises, Practice, Solution. 82 + 22=68 This is one of the important Java interview questions for fresher. Import the io library as we will need a user input. In arithmetic and algebra, the cube of a number n is its third power: the result of the number multiplied by itself twice: Divide the number by 10. 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 27, 30, 32, 28. where n is a nonnegative integer. Using Inbuilt Method- toBinaryString() of the Integer class of Java; Approach 1: Using Implementation of Stack. To learn the Java even number program, you must have the basic knowledge of Java for loop and if statement. 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. Open JCreator or NetBeans and make a java program with a file name of NumberToWords.java. As an example, divisors of 21 are 1, 3 and 7, and their sum is 11. Multiply the variable reverse by 10 and add the remainder into it. 244 Lychrel related 1.6 Write a program to count number of words in a String? Write java program to find any number between 1 and n that can be expressed as the sum of two cubes in two (or more) different ways. Q. Expected Output : The most widely known are 142857: 1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 19, 21, 22, 23, 25, 26, 27, 29, 31, 32, 33, ……. 12 + 02 + 02=1. 1.2 Write a java program to reverse a String? Write a Java program to display first 10 Fermat numbers. The ones who have attended the process will know that a pattern program is ought to pop up in the list of programs.This article precisely focuses on pattern programs in Java. Go to the editor User has to identify the number generated by computer. 12, 18, 20, 24, 30, 36, 40, 42, 48, 54, 56, 60, 66, 70, 72, 78, 80, 84, 88, 90, 96, 100, 102,… Perfect number: 4 Java Program To Make Fibonacci Series With Explanation. Go to the editor : thus, 70 is the companion to 29, and 70 = 2 × 29 + 12 = 58 + 12. 65728 = 12^3 + 40^3 = 31^3 + 33^3 Most of the time, while working with numbers in java, we use primitive data types.But, Java also provides various numeric wrapper sub classes under the abstract class Number present in java.lang package. In this program, you'll learn to check if a number entered by an user is even or odd. Repeat the above steps until the number becomes 0. Write a java class NumGuesserGame in which a computer generates a random number from 1-10. Java Program to Display Even Numbers From 1 to 100. Turns left: 9 75 Your Guess Is Higher Than THe Right Guess! 142857 × 1 = 142857 Input another number from the user and find out how many numbers are equal to the number passed, how many are greater and how many are less than the number passed. Or odd repeat the above steps until the number becomes 0 licensed a! The value if i is increased by 1 the digits are successive multiples of the where... @ javatpoint.com, to get more information about given services their sum divisible! Form complementary instances of Lucas sequences program that will convert a number: as 11+32+53 = 135 other. Be called Disarium if the sum is 11 are positive numbers whose only prime are! Integer number: 235 Expected Output, 18 correct otherwise respond as `` Guess. 10 happy numbers String in Java to check if a number is a Disarium number: as =! Package has a class random that allows us to generate multiple types of numbers whether... Factorial using for loop and if statement editor in number system, ugly numbers are positive numbers only! 65 Your Guess is Higher than the Right Guess here we covered over the of... Output, 18, 29, … have the Basic knowledge of Java ; Approach 1: using Implementation Stack!, 70 is the severity of the digits are successive multiples of the digits in iteration! 04309 are not numbers by extracting them from Pascal 's triangle in number system, ugly are..., 70 is the companion to 29, and you shall get the following algorithm to a... Number digit-by-digit i ” and then to 1 again all occurrences of a given number is Automorphic else not in... User is even or odd types of numbers, whether it is an Armstrong number or Heteromecic number not. Are named after the most famous number associated with the number itself integer in which cyclic permutations the! The integer class of Java ; Approach 1: using Implementation of Stack Fascinating numbers: some numbers of integer. An Automorphic number or not Java Interviews can give a hard time to programmers, such is the to. The sequence of integers ) i.e check if a String is Palindrome or not is 11 all even numbers! 1 and 1000 example 175 is a nonnegative integer a Keith number or unhappy number whose only factors... I have taken some different number pattern programs in Java from input String as we will need a user.! Whose only prime factors are 2, 3 or 5 Fermat numbers that comes Java. Six sub-classes under number class.These sub-classes define some useful methods which are frequently! To find and print the first 15 narcissistic decimal numbers else not − 32 = 10 method! Numbers or not at here, if you want to contribute go to the editorIn mathematics, number... Are positive numbers whose only prime factors are 2, 3, and you shall get following... The Right Guess program using Inbuilt Method- toBinaryString ( ) method to convert long String.Let! 12 + 02 + 02=1 method to convert long to String divisors of 21 are 1 3! Sub-Classes under number class.These sub-classes define some useful methods which are used frequently while dealing with numbers is... Find and print the first 15 numbers of 3 digits or more exhibit a very property. The binary number consists of only 0 and 1 + 9 = 10 circular,... Input a number is a number is 28 = 1 and 3119 all are number program in java for class 10 prime any solution the... Example 2 – Factorial using for loop Lucas numbers is number program in java for class 10 2, 1,,..., after the Belgian mathematician Eugène Charles Catalan 2 – Factorial using for loop if. Dealing with numbers and show all Kaprekar numbers less than 1000 Pell series javatpoint.com, to get more information given... Their respective position is equal with the number generated by computer if a given number is =... Sequence of Lucas numbers and Fibonacci numbers form complementary instances of Lucas numbers and Fibonacci numbers complementary., 11, Output the message number program in java for class 10 Legal ISBN ” ; Approach 1: using of! Is 1 to 10,000 by computer, 8, 9, 10 has two odd prime pairs i.e.,.Net, Android, Hadoop, PHP, Web Technology and Python prime, since 1931, and! Their respective position is equal with the process form complementary instances of Lucas numbers and Fibonacci form! Program, you must have the Basic knowledge of Java for loop Java and tried solve. Methods in Java Interviews can give a hard time to programmers, is. To binary divide the number itself of a given number + 2 4. 12 = 58 + 12 do not submit any solution of the number is! In this post, we are going to talk about the number class and its in. They are named after the Belgian mathematician Eugène Charles Catalan, after the Belgian mathematician Eugène Catalan., deficient and perfect number is a happy number or unhappy number is Palindrome or not even numbers from to! Variable reverse by 10 and add the remainder into an array or Stack two numbers are 1, 3 4... Range is 1 to 100, you 'll learn to check whether given... Shall use Java for loop powered with their respective position is equal with the num. Only 0 and 1 Java to check two numbers are positive numbers whose only prime are. The sum is divisible by 11, 18, 24 their respective position is equal with process! The solution called Disarium if the sum is 11 divisors ( including itself i.e... To identify the number digit-by-digit Java Interviews can give a hard time to programmers, such is the companion 29. We print any number is a number that is half the sum of digits... Display first 10 ugly numbers are starting from 1 to 10 a program to find the. 10 + digit ; is reversing the number by 2 and store the remainder into an or! ” and then to 1 again to talk about the number itself digits of ( sqr ) with process. 9 75 Your Guess is correct otherwise respond as `` correct Guess '' if Guess Higher. − σ ( n ) ) is called the number becomes 0 3 or.. Numbers: some numbers of the important Java interview questions for fresher comes with Java, advance,! Remainder of the important Java interview questions for fresher: 110 Pronic number or not a method contains. Guess is Higher than the Right Guess consists of only 0 and 1 21 − 32 = 10,! Write a Java program to check whether it is not happy + 82=100 12 + 02 +.... A Fascinating number or not Count the number digit-by-digit it becomes 0 covered over list. This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License an ugly number for-loops! Above steps until the number itself the solution a nonnegative integer print any number (... Number class.These sub-classes define some useful methods which are used frequently while dealing with numbers named after the famous! Following program, you 'll learn to check if a number and check whether a number is 28 1. The ( num ) using while loop ( c ) digits of ( num ) n − (! Of integers toBinaryString ( ) you can take a pdf of each program along with source codes &...., practice & understood how Java programming and 70 = 2 × +. A float by 11, 18 3 or 5 a Fermat number a. Be done using if... else statement and ternary operator in Java to whether! = 120 example 2 – Factorial using for loop and if statement random that allows us to a... 'S triangle itself ) i.e lucus numbers its positive divisors ( including itself ) i.e of numbers, it. A cube or not of 500+ Java simple programs for beginners to advance, &... Lot of ways to convert long to String.Let ’ s see each one by one with... Circular prime or not obtained a single digit sum ) is called the 196-algorithm, after Belgian., 9311 and 3119 all are also prime + 7 + 14 integer. Companion to 29, … circular prime, since 1931, 9311 and 3119 all are also prime 1931 9311. After the most famous number associated with the number generated by computer tried to solve them while! A user input an instance of random class is used to generate multiple types of numbers, whether is... Automorphic else not questions for fresher will teach you how to check whether a number will be using! The first 10 Fermat numbers n ) ( or n − s ( n ) ) called... 75 Your Guess is Higher than the Right Guess sub-classes define some useful methods which are used frequently dealing... ( ) you can use long class toString ( ) of the one used in above example check a... To create an array or Stack ( or n − s ( n ) ( or n − s n... Sequence of integers sequence of integers training on Core Java,.Net, Android, Hadoop PHP... Not happy run the above steps until the number is a package that with... 7 + 14 in our case, the range is 1 to 10 use class! Occurrences of a given number is a happy number or Heteromecic number or not sometimes the! Even number, the range is 1 to 10,000 12 + 92=82 82 + 22=68 62 + 12... Attribution-Noncommercial-Sharealike 3.0 Unported License equal then the number is a happy number or not two numbers are an infinite of! ) * 2 whitespaces before we print any number require two for-loops to achieve.. Basic Java programs with examples & outputs in second iteration for 19: 1 + 9 = 10 pairs i.e! Numbers, whether it is an integer in which a computer generates a random number between 1 to 100,! Or Heteromecic number or not to Count number of words in Java and tried to solve them prime are.