Armstrong or not

 import java.util.Scanner;


class Main {

    public static void main(String[] args) {

Scanner sc=new Scanner(System.in);

int num=sc.nextInt();

int ornum=num;

int sum=0;

while(num>0){

    int digit=num%10;

    //int sum=0;

    sum= sum + (digit * digit * digit);

    num=num/10;

}if(ornum==sum){

System.out.println("Is a armstrong");

    }

    else{

        System.out.println("Is a not armstrong");

    }

}

}




SERIES

 import java.util.Scanner;


class Main {

    public static void main(String[] args) {

Scanner sc=new Scanner(System.in);

int num=sc.nextInt();

int a=0;

int b=1;

int count=0;

while(count<num){

        System.out.print(a+" ");


   int c=a+b;

    a=b;

    b=c;

    count++;

    }

    }}




palindrom


import java.util.Scanner;

public class Main

{

public static void main(String[] args) {

Scanner sc=new Scanner(System.in);

int num=sc.nextInt();

int orginal=num;

int digit;

int reverse=0;

while(num>0){

    digit=num%10;

    reverse=reverse*10+digit;

    num=num/10;

}

if(orginal==reverse)

{

    System.out.print("is a palindrom");

}

else{

    System.out.print("is a not palindrom");

}

}

}

factorial 


 import java.util.Scanner;

public class Main

{

public static void main(String[] args) {

Scanner sc=new Scanner(System.in);

int num=sc.nextInt();

int orginal=num;

int fact=1;

while(num>0){

    fact=fact*num;

    num--;

}

System.out.print(+fact);

}

}

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