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Main.java
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Main.java
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/******************************************************************************
Happy Number code in java
*******************************************************************************/
import java.util.*;
public class Main
{
static int summer(int n) // Gets sum of squares of the digits
{
int i,j,s=0;
for(i=n;i!=0;i=i/10)
{
j=i%10;
s+=(j*j);
}
return s;
}
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
System.out.println("Enter Number");
int a=sc.nextInt(); // Scanner class to take input
int n=a; // backup of number
while(true) // Loop for checking Happy Number
{
if(summer(n) == 1)
{ System.out.println("True"); break; }
n = summer(n);
if (n < 10)
{ System.out.println("False"); break; }
}
}
}