Java Number Pattern 20

Posted in Java Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 222 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

Java Number Pattern 20

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;
  int k = 1;
  for(i=1; i<5; i++) 
  {
   for(j=1; j<=i; j++)  
    System.out.print(k++ +" ");
   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 begins with the declaration of a public class named Demo.
Inside the Demo class, there's a public static void main(String[] args) method, which serves as the entry point of the program. This method is executed when the program is run.
Inside the main method, three integer variables are declared:
- i and j are loop control variables used in the nested loops.
- k is initialized to 1. This variable will be used to print consecutive numbers in the pattern.
The outer loop for(i = 1; i < 5; i++) runs from i = 1 to i = 4. It controls the number of rows in the output pattern.
Inside the outer loop, there's an inner loop for(j = 1; j <= i; j++). This loop runs from j = 1 to j being less than or equal to i. It controls the number of columns in each row of the pattern.
Within the inner loop, the statement System.out.print(k++ + " "); prints the current value of k, followed by a space. The k++ expression prints the current value of k and then increments it by 1.
After the inner loop completes, System.out.println(); is used to move to the next line, creating a new row in the pattern.
The outer loop continues to the next iteration, and i is incremented, which leads to the inner loop running again. This process repeats until the outer loop's condition is no longer met (i is no longer less than 5).
Once the loops are finished, the program execution completes, and the output pattern is displayed.

💯 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!