The time complexity of this solution isO(n), wherenis the number of digits in the integer. Adding to aHashSetand checking its size are bothO(1)operations, but we still have to iterate through each digit. 4. Using Stream API Java’sStream APIprovides a concise and modern solution to count...
// Java program to find the sum of digits of a number// using the recursionimportjava.util.*;publicclassMain{staticintsum=0;publicstaticintsumOfDigits(intnum){if(num>0){sum+=(num%10);sumOfDigits(num/10);}returnsum;}publicstaticvoidmain(String[]args){Scanner X=newScanner(System.in);...
// Java program to find sum and product of // all digits using class import java.util.*; class DigitsOpr { private int num; //function to get value of num public void getNum(int x) { num = x; } /*End of getNum()*/ //function to calculate sum of all digits public int...
In many applications very large integers numbers are required. Some of these applications are using keys for secure transmission of data, encryption, etc. In this problem you are given a number, you have to determine the number of digits in the factorial of the number. Input Input consists of...
Java exercises and solution: Write a Java method to count the number of digits in an integer with the value 2. The integer may be assumed to be non-negative.
importjava.util.Scanner; classPhoneNumberFormatting { publicstaticvoidmain(Stringarg[]) { longn=10; inta[]=newint[10]; Scannersc=newScanner(System.in); System.out.println("Enter a digits of phone number"); for(inti=0;i<n;i++) ...
Not a prime number If you have any doubts while solving the 1 to 100 or 1 To N Prime number program leave a comment here. More Java Programs: Addition, Multiplication, Subtraction, Division Java Program Sum of Digits Of A Number To Reverse An Array Insert an Element In Array Linear Searc...
In many applications very large integers numbers are required. Some of these applications are using keys for secure transmission of data, encryption, etc. In this problem you are given a number, you have to determine the number of digits in the factorial of the number. ...
This method is similar to the above one, but here we are usingsplit, a function ofString. publicclassMain{publicstaticvoidmain(String[]args){intnumber1=12223;String number=String.valueOf(number1);String[]digits=number.split("(?<=.)");for(inti=0;i<digits.length;i++){System.out.println...
In the exercise above - It takes a decimal number ('dec_num') as input from the user using the "Scanner" class. It initializes an empty string 'hexdec_num' to store the hexadecimal representation and defines an array 'hex' containing hexadecimal digits (0-9 and A-F). ...