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// SwastikaSignclass 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++; } }} |
Output:
Note: One can also use BufferedReader class if you want to take input from user to enter the number of rows here.
