Pattern 12 & 13

Pattern 12  

import java.util.*;
public class p8 {
	public static void main(String[] args) 
	{
		Scanner s = new Scanner(System.in);
		System.out.println("Enter How many rows you want?");
		int n=s.nextInt();
		
		for(int i=1; i<=n; i++)
		{
			for(int j=1; j<=n-i;j++)
			{
				System.out.print(" ");
			}	
			for(int j=1; j<=2*i-1;j++)
			{
				if(i%2==0 && (j==1||j==(i*2-1)))
					System.out.print("+");
				else
					System.out.print("*");
			}
		System.out.println();
		}
	}
}

OUTPUT
       *
      +*+
     *****
    +*****+
   *********
  +*********+
 *************
+*************+

Pattern 13  

import java.util.*;
public class p9 {
	public static void main(String[] args) 
	{
		Scanner s = new Scanner(System.in);
		System.out.println("Enter How many rows you want?");
		int n=s.nextInt();
		
		for(int i=n; i>0; i--)
		{
			for(int j=1; j	<=n-i;j++)
			{
				System.out.print(" ");
			}	
			for(int j=1; j	<=2*i-1;j++)
			{
				if(i%2==0&&(j==1||j==(i*2-1)))
					System.out.print("+");
				else
					System.out.print("*");
			}
		System.out.println();
		}
	}
}

OUTPUT

*************
 +*********+
  *********
   +*****+
    *****
     +*+
      *