pattern17.java

import java.util.*;

public class pattern17 {

    public static void main(String[] args) {
        Scanner scn = new Scanner(System.in);

        int n = scn.nextInt();
        
        int fst = n / 2;
        int st = 1;
        for(int i = 1;i<=n;i++){
            for(int j = 1;j<=fst;j++){
               if(i == (n/2+1)){
                   System.out.print("*\t");
               }else{
               System.out.print("\t");
               }
            }
            for(int j = 1;j<=st;j++){
               System.out.print("*\t");
            }
             if(i <= n/2){
                    st++;
                }else{
                    st--;
                }
            System.out.println();
        }
        
    }
}

/*

input = 5;

output:

		*
		*	*
*	*	*	*	*
		*	*
		*
		
*/