Java Program to Implement Adam Number and Amstrong Number

by

Aim:

To write a java program to implement Adam Number and Amstrong Number. T
application should get a Boolean input. If Boolean value is true. Adam Number should be
calculated else Amstrong numbers should be calculated.

Algorithm:

  1. Find square of a number.
  2. Find reverse of a number.
  3. Find the square of the number in Step 2.
  4. Find reverse of a number in Step 3.
  5. Find whether the number obtained in Step 4 and Step 1 are equal or not.

Program:

import java.util.*;
class Main
{
public static void main(String []args)
{
Scanner put=new Scanner(System.in);
System.out.println("do u want calculate ADAM NUMBER or AMSTRONG NUMBER(0/1)");
int ch=put.nextInt();
if(ch==0)
{
System.out.println("ENTER THE N VALUE");
int n=put.nextInt();
System.out.println("ADAM NUMBER");
int count=0,i=0;
while(i<n)
{
int sq=count*count;
int revsq=reverseDigits(count);
revsq=revsq*revsq;
int revs=reverseDigits(revsq);
if(sq==revs)
{
System.out.println(count);
i++;
}
count++;
}
}
else
{
System.out.println("ENTER THE N VALUE");
int n=put.nextInt();
System.out.println("AMSTRONG NUMBER");
int count=0,i=0;
while(i<n)
{
if(count==ams(count))
{
System.out.println(count); 
i++;
}
count++;
}
}
}
static int reverseDigits(int num)
{
int rev = 0;
while (num > 0)
{
rev = rev * 10 + num % 10;
num /= 10;
}
return rev;
}
static int ams(int num)
{
int rev = 0;
int res=0;
while (num > 0)
{
rev =  num % 10;
res=res+rev*rev*rev;
num /= 10;
}
return res;
}
}

Execution:

OUTPUT :

FOR ADAM NUMBER:
do u want calculate ADAM NUMBER or AMSTRONG NUMBER (0/1)
0
ENTER THE N VALUE
5
ADAM NUMBER
0
1
2
3
11

FOR AMSTRONG NUMBER:

do u want calculate ADAM NUMBER or AMSTRONG NUMBER (0/1)
1
ENTER THE N VALUE
5
AMSTRONG NUMBER
0
1
153
370
371

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