LAb_4_7.java

import java.util.*;
public class LAb_4_7{
    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);
        System.out.println("Enter the number ");
        int n = sc.nextInt();

        for(int i=1; i<=n ;i++){
             for(int j =1 ;j<=i;j++){
                System.out.print("*");
             }
             System.out.println();
        }
        for(int i=1; i<=n ;i++){
            for(int k =1 ;k<=n-i;k++){
               System.out.print("*");
            }
            System.out.println();
       }
    }

}