Java Number Pattern 51

Posted in Java Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 160 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

Java Number Pattern 51

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, m = 1;
  for(i=1; i<=5; i++)  
  {
   m = k + i - 1;
   for(j=1; j<=i; j++)
   {
    if(i%2 == 1)
     System.out.print(k +" ");
    else
     System.out.print(m-- +" ");
    k++;
   }
   System.out.println();
  }
 }
}

💻 Testing the Program

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

Output

1
3 2
4 5 6
10 9 8 7
11 12 13 14 15

🧠 How the Program Works

Let's break down the logic behind the code:

The program defines a class named Demo.
Inside the main method:
1. Two integer variables i and j are declared to be used as loop counters.
2. Two integer variables k and m are declared and initialized to 1. These variables will be used to generate the numbers printed in the pattern.
The outer loop (for(i=1; i<=5; i++)) iterates 5 times, representing the rows of the pattern.
Inside the outer loop:
1. The value of m is calculated as k + i - 1. This will be used to generate numbers for the even-numbered rows.
2. The inner loop (for(j=1; j<=i; j++)) iterates i times for each row, representing the columns of the pattern.
3. Within the inner loop:
  - If the current row number i is odd (i.e., i % 2 == 1), it prints the value of k followed by a space.
  - If the current row number i is even, it prints the value of m, decrements m, and then prints a space.
  - In both cases, the value of k is incremented by 1 for the next iteration.
4. After the inner loop completes for a particular row, a new line is printed using System.out.println() to move to the next row.
The program outputs a pattern of numbers based on the logic described above. The pattern has 5 rows, and each row contains a varying number of columns.

💯 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!