Java.Util Package Articles

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Find all divisors of a natural number in java

Ankith Reddy
Ankith Reddy
Updated on 25-Jun-2020 10K+ Views

Following is the Java program which prints all the divisors of a given number.Programimport java.util.Scanner; public class DivisorsOfNaturalNumber {    public static void main(String args[]) {       Scanner sc = new Scanner(System.in);       System.out.println("Enter required number :");       int num = sc.nextInt();             for(int i = 1; i

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Check if a large number is divisible by 3 or not in java

Arjun Thakur
Arjun Thakur
Updated on 25-Jun-2020 5K+ Views

If the sum of the digits of a number is divisible by 3, then the number is divisible by 3.Some examples of numbers divisible by 3 are as follows.The number 85203 is divisible by 3 because the sum of its digits (8 + 5 + 2 + 0 + 3 = 18) is divisible by 3.The number 79154 is not divisible by 3 because the sum of its digits (7 + 9 + 1 + 5 + 4 = 26) is not divisible by 3.Programimport java.util.Scanner; public class DivisibleBy3 {    public static void main(String args[]) {       Scanner sc = new Scanner(System.in);       System.out.println("Enter a number :");       String num = sc.nextLine();       int digitSum = 0;             for(int i = 0; i

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Check if a large number is divisible by 11 or not in java

Chandu yadav
Chandu yadav
Updated on 25-Jun-2020 2K+ Views

A number is divisible by 11 if the difference between the sum of its alternative digits is divisible by 11.i.e. if (sum of odd digits) – ( sum of even digits) is 0 or divisible by 11 then the given number is divisible by 11.Programimport java.util.Scanner; public class DivisibleBy11 {    public static void main(String args[]) {       Scanner sc = new Scanner(System.in);       System.out.println("Enter a number :");       String num = sc.nextLine();       int digitSumEve = 0;       int digitSumOdd = 0;            for(int i = 0; i

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GCD and LCM of two numbers in Java

Chandu yadav
Chandu yadav
Updated on 25-Jun-2020 1K+ Views

Following is an example which computes find LCM and GCD of two given numbers.Programimport java.util.Scanner; public class LCM_GCD {    public static void lcm(int a, int b){       int max, step, lcm = 0;       if(a > b){          max = step = a;       } else{          max = step = b;       }       while(a!= 0) {          if(max%a == 0 && max%b == 0) {             lcm = max;             break;          }          max += step;       }       System.out.println("LCM of given numbers is :: "+lcm);    }    public static void gcd(int a,int b){       int i, hcf = 0;          for(i = 1; i

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Sum of all proper divisors of a natural number in java

Arjun Thakur
Arjun Thakur
Updated on 30-Jul-2019 568 Views

Following is the Java program which prints all the sum of all the divisors of a given number.

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