Java Program to Print Swastika Sign By Taking User Input

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Take as input N, an odd number (>=5). Print the following pattern as given below for N = 7. Here the input format is the value of N and output results out in swastika pattern printing.

Illustration:

Input Format: Enter value of N ( >=5 )
Constraints: 5 <= N <= 99

Output Format: Print the required pattern.

*     * * * *

*     *

*     *

* * * * * * *

        *     *

        *     *

* * * *       *

Let us thinks of a way out in order to figure out by listing the logic prior to writing any code in order to generate the desired pattern.

Procedure:

First, take an input (N) from the user.
Initialize rows and cols as 1 to make loops in for the statement.
In the first row, we definitely know we have to print a * then give some spaces till N/2, and then again print stars till N.
In the second to N/2 rows, first, we need to print a * then spaces till N/2 (that it , we don’t need to provide spaces here)
In the (N/2)+1 th row, just print * till N.
Again in (N/2) +2th row to N -1, we need to first print spaces till N/2 and then print a * and the spaces till N-1 and finally a * at the end
In the final row, we need to print * till (N/2) + 1 and then print spaces till N-1 now and then finally ending it a *.
Lastly do not forget to add System.out.println() to add a blank line after each line of work

Now let us implement the some by writing the core for the same.

Example

Java

// Java program to Illustrate Swastika Sign Pattern Printing
 
// Main class
// SwastikaSign
class GFG {
 
    // Main driver method
    public static void main(String args[])
    {
 
        // Creating an object of Scanner class to read input
        // from user
        Scanner sc = new Scanner(System.in);
 
        // Reading number N from user
        int N = sc.nextInt();
        // Custom setting the rows to be 10 to
        // understand the output
 
        // Initializing rows to unity initially
        int rows = 1;
 
        // This condition holds true
        // Till rows are lesser than input number from user
        while (rows <= N) {
 
            if (rows == 1) {
 
                // Start work
                System.out.print("*");
 
                // Space work
                for (int csp = 1; csp < N / 2; csp++)
                    System.out.print(" ");
 
                // Star work
                for (int cst = (N / 2) + 1; cst <= N; cst++)
 
                    System.out.print("*");
                System.out.println();
            }
 
            else if (rows <= N / 2 && rows > 1) {
                // Star work
                System.out.print("*");
 
                // Space work
                for (int csp = 1; csp < N / 2; csp++)
 
                    System.out.print(" ");
                System.out.print("*");
                System.out.println();
            }
 
            else if (rows == (N / 2) + 1) {
 
                for (int cstt = 1; cstt <= N; cstt++)
 
                    System.out.print("*");
                System.out.println();
            }
 
            else if (rows <= N - 1 && rows > (N / 2) + 1) {
 
                // Space work
                for (int csp = 1; csp <= N / 2; csp++)
                    System.out.print(" ");
 
                // Star work
                System.out.print("*");
 
                // Space work
                for (int cspp = 1 + (N / 2); cspp < N - 1;
                     cspp++)
 
                    System.out.print(" ");
 
                // Star work
                System.out.print("*");
                System.out.println();
            }
            else {
 
                for (int csttt = 1; csttt <= (N / 2) + 1;
                     csttt++)
 
                    System.out.print("*");
 
                for (int csppp = (N / 2) + 2;
                     csppp <= N - 1; csppp++)
 
                    System.out.print(" ");
                System.out.print("*");
            }
            rows++;
        }
    }
}