Java Number Pattern 37

Posted in Java Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 123 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

Java Number Pattern 37

Here`s a program that prints the above number pattern using Java Programming:

Demo.java

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public class Demo
{
 public static void main(String[] args)
 {
  int i, j;
  for(i=1; i<=5; i++) 
  {
   for(j=i; j>1; j--)
    System.out.print(j);
   for(j=1; j<=i; j++) 
    System.out.print(j);
   System.out.println();
  }
 }
}

💻 Testing the Program

When you run the above program, it will print the following output:

Output

🧠 How the Program Works

Let's break down the logic behind the code:

The program defines a class named Demo.
Inside the class, there's a main method, which is the entry point of the program. The public static void main(String[] args) signature indicates that this method can be called by the Java runtime and it accepts an array of strings as arguments (though in this program, the arguments are not used).
Two integer variables i and j are declared without any initial values.
The outer loop for(i=1; i<=5; i++) iterates through the values of i from 1 to 5 (inclusive).
Inside the outer loop, there are three nested loops:
- The first nested loop, for(j=i; j>1; j--), starts with the current value of i and decrements j until it's greater than 1. During each iteration of this loop, it prints the value of j. This loop is used to print a decreasing sequence of numbers from i down to 2.
- The second nested loop, for(j=1; j<=i; j++), starts with 1 and increments j until it's less than or equal to the current value of i. During each iteration of this loop, it prints the value of j. This loop is used to print an increasing sequence of numbers from 1 up to i.
- After both nested loops, System.out.println() is called to print a newline character, moving to the next line for the next iteration of the outer loop.
As the outer loop progresses, it repeats the printing of decreasing and increasing sequences of numbers based on the current value of i.
Once the outer loop completes all iterations (i.e., when i reaches 5), the program will finish.

💯 Tips for Enhancement:

Explore the versatility of this pattern by adjusting its parameters. Whether you increase or decrease the size, tweak the spacing, or modify the characters used, each change opens up a world of possibilities, allowing you to customize and create your unique visual effects.

✔ Conclusion:

Creating visually appealing patterns is not only a fun endeavour but also a great way to enhance your programming or design skills. We hope this tutorial has inspired you to explore the world of creative coding. Share your creations with us, and let your imagination run wild!

🤗 Closing Call-to-Action:

We'd love to see your unique interpretations of the number pattern. Share your creations in the comments below, and don't hesitate to reach out if you have any questions or suggestions for future tutorials. Happy coding!