Java Number Pattern 13

Posted in Java Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 125 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

Java Number Pattern 13

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=5; i>=1; i--)
  {
   if(i%2 == 0)
   {
    for(j=i; j>=1; j--)
     System.out.print(j);
   }
   else
   {
    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 starts by defining a class named Demo.
The public static void main(String[] args) method is the entry point of the program. It's where the execution begins.
Inside the main method, two integer variables i and j are declared but not initialized yet.
The outer loop for(i=5; i>=1; i--) initializes i to 5 and then decrements it by 1 in each iteration until it becomes 1. This loop controls the number of rows in the output pattern.
Inside the outer loop, there's an if-else statement that checks whether i is even or odd using the condition i%2 == 0.
If i is even, the program enters the block associated with the if statement. In this block, an inner loop for(j=i; j>=1; j--) is used to print the numbers from i down to 1. The numbers are printed without any spaces in between.
If i is odd, the program enters the block associated with the else statement. In this block, an inner loop for(j=1; j<=i; j++) is used to print the numbers from 1 up to i. Again, the numbers are printed without any spaces in between.
After each inner loop (whether it's for even or odd i), a System.out.println() statement is used to print a newline character, which moves the output to the next line.
The entire process of checking whether i is even or odd, and then printing the appropriate sequence of numbers and newline, repeats for each value of i from 5 down to 1.
After all iterations are complete, the program execution ends.

💯 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!