Printing different combination of a three digit non-repeating numbers.

 import java.util.*;

public class PrintDiffNo{

public static void main(String args[]){

Scanner sc = new Scanner(System.in);

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

int n = sc.nextInt();

countNo(n);

}

public static void countNo(int n){

int counter=0;

System.out.println("Different numbers are :");

for(int i=1;i<=n;i++){

for(int j=1;j<=n;j++){

for(int k=1;k<=n;k++){

if(k!=j && k!=i && i != j){

counter++;

System.out.println(i+""+j+""+k);

}

}

}

}

System.out.println("Total different number will be will be = "+counter);

}

}