Alphabet M shape Pattern in java

M shape Pattern

Disclaimer:-
to understand what happen in this pattern i will recommend you to watch my blog that " How to make V shape Pattern"
to watch this click here

Steps to do this:-
1. take 3 integers i,j,n ( i and j is for loop and n is for user input length)

2. take a length from user 

3.now take 2 integers p1 and p2 and initialize them
p1=1;
p2=n*2-1;

4. start the i loop (i=1;i<=n;i++) and inside i loop start the j loop 
(j=1;j<=n*2;j++)  and check 

if(j==p1|| j==p2 || j==1 || j==n*2)
{
print "*";
}
else
{
print " ";
}
now close the j loop and do
p1++;
p2--;
print a new line inside i loop

Explanation:-

• when we check if (j==p1) it will print left to bottom line

*
 *
  *
   *
    *

•  when we check if (j==p2) it will print right to bottom line

                   *
                 *
              *
           *
        *

• when we check if j==1 it will print the 1st column

*
*
*
*
*

• when we check if j==n*2 it will print the last column          
  

        

*

*

*

*

*

     and at last it will print our M shape pattern

5. Save and run

The Source Code

import java.util.Scanner;
class mpattern
{
    public static void main(String[] args)
    {
        Scanner s=new Scanner(System.in);
        int i,j,n;
        System.out.println("enter the length");
        n=s.nextInt();
        int p1=1;
        int p2=n*2-1;
        for(i=1;i<=n;i++)
        {
            for (j=1; j<=n*2;j++ )
             {
                if (j==p1||j==p2||j==1||j==n*2)
                 {
                     System.out.print("*");
                  
                }
                else
                {
                    System.out.print(" ");
                }
            }
            p1++;
            p2--;
            System.out.println();
        }
    }
}

OUTPUT

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