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import java.util.Scanner;

perfect Number between 1-N

public class Perfect {

public static void main(String[] args) {

Scanner in = new Scanner(System.in);

System.out.println("Enter the no. - ");

long n=in.nextInt();

int i;

for(i = 2; i < n; i++) {

if(isNumPerfect(i)) {

System.out.println(i + " is a perfect number");

}

in.close();

}

public static boolean isNumPerfect(int i) {

boolean isPerfect = false;

int sum = 1;

int x;

for(x = 2; x <= i / 2; x++) {

if(i % x == 0) {

sum += x;

}

if(sum == i) {

isPerfect = true;

}

return isPerfect;

}