java-with-oops-basics/Patterns.java at main · divyashree-21/java-with-oops-basics · GitHub

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import java.util.*;
public class Patterns {
    public static void main(String[] args){
        int n;
        Scanner sc = new Scanner(System.in);
        n = sc.nextInt();
        int sum = 0;
        for(int i =1;i<=n;i++){
            for(int j = 1;j<=i;j++){
                System.out.print("*");
            }
            System.out.println();
        }

        System.out.println("Reverse pattern");
        for(int i = 1;i<= n;i++){
            for(int k = 0;k <= n-i;k++){
                System.out.print(" ");
            }
            for(int j = 1;j <= i;j++){
                System.out.print("*");
            }
            System.out.println();
        }

         System.out.println("Reverse pattern");
        for(int i = n;i>=1;i--){
            for(int j = 1;j <= i;j++){
                System.out.print("*");
            }
            System.out.println();
        }
        for(int i = n;i>=1;i--){
            for(int k = 0;k <= i;k++){
                System.out.print(" ");
            }
            for(int j = 1;j <= i;j++){
                System.out.print("*");
            }
            System.out.println();
        }

}
}