Else, it's a number. Validate any international phone number as per E.123. calculateLength() counts the digits present in a number. A number is said to be a Neon Number if the sum of digits of the square of the number is equal to the number itself. Example: 25 is an automorphic number as its square is 625 and 25 is present as the last digits Compute all the permutations of the string, Capitalize the first character of each word in a String. The entered number must be a whole number. Write a Java program to check whether a given number is a Disarium number or unhappy number. Once this is done it increments the number and stores it in fact_n to find out the factorial of the number. + 4! Iterate through each characters of the string. + 5! Also, with your method, you would also have to add a while loop, new input variable, etc. In this program we have specified the value of number during declaration and the program checks whether the specified number is positive or negative. I think right now the requirement is either poorly specified or not totally understood, or both. = 1 + 24 + 120 = 145. If the sum is equal to the original number then, the given number is Disarium number. Java Program to check Krishna Murthy or Special number ... For example 145 is krishnamurthy number. And, the logic is based on throwing exceptions, this can be pretty expensive. It is a 10 digit number. C Program to Check the Number is Krishnamurthy Number or not. 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. Program is divided into functions factorial(int) and isKrishnamurthy(int). Given a number, we have to check that the entered number is Evil Number or not. Write a Program in Java to input a number and check whether it is an Automorphic Number or not. What Is a unique number? Instead, we can use the power of regular expressions to check if the string is numeric or not as shown below. A Smith Number is a composite number whose sum of digits is equal to the sum of digits in its prime factorization. Let’s write this in a program: To understand this Program you should have the knowledge of following Java Programming topics:. Divide the number by 10 and increment the variable length by 1. 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. Palindrome ref But in out case input is a number such as 121, 345543 are examples of the palindrome. Once this is done it increments the number and stores it in fact_n to find out the factorial of the number. Below is the program which checks whether mobile number entered by user has 10 digits only. This program checks if a number entered is a Neon Number or not, in JAVA. Example: Input: 3 Output: 3 – Is an Evil prime. = 1 + 24 + 120 = 145 which is equal the entered number. public static void Initialize the … 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. The above Java program has all the variables as discussed in the logic for the program. To understand this example, you should have the knowledge of the following Java programming topics: In the above program, we have a String named string that contains the string to be checked. If it throws an error (i.e. It means it is only divisible by 1 and itself, and it start from 2. This is done using a for loop and while loop in Java. Input: n = 19 Output: True 19 is Happy Number, 1^2 + 9^2 = 82 8^2 + 2^2 = 68 6^2 + 8^2 = 100 1^2 + 0^2 + 0^2 = 1 As we reached to 1, 19 is a ... // Java program to check if a number is a Happy number or not. 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