Java Number Pattern 54

Posted in Java Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 191 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

Java Number Pattern 54

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, k;
  for(i=1; i<=5; i++) 
  {
   for(j=1; j<=5; j++)
   {
    if(i == j)
     System.out.print(j);
    else
     System.out.print(" ");
   }
   for(k=4; k>=1; k--)
   {
    if(i == k)
     System.out.print(k);
    else
     System.out.print(" ");
   }
   System.out.println();
  }
  for(i=4; i>=1; i--)
  {
   for(j=1; j<=5; j++)  
   {
    if(i == j)
     System.out.print(j);
    else
     System.out.print(" ");
   }
   for(k=4; k>=1; k--)
   {
    if(i == k)
     System.out.print(k);
    else
     System.out.print(" ");
   } 
   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 with a main method.
Inside the main method, three integer variables i, j, and k are declared.
The program enters a loop with i ranging from 1 to 5 (inclusive). This loop generates the first half of the pattern.
Within this loop, there are three nested loops:
- The first nested loop (for(j=1; j<=5; j++)) is responsible for printing the first set of numbers (increasing order) or spaces. If i is equal to j, it prints the value of j, otherwise, it prints a space.
- The second nested loop (for(k=4; k>=1; k--)) prints the second set of numbers (decreasing order) or spaces in a similar manner as the first nested loop.
After each row is constructed using the nested loops, System.out.println(); is used to move to the next line.
Once the first half of the pattern is complete, the program enters another loop with i ranging from 4 to 1 (inclusive). This loop generates the second half of the pattern, which is the mirror image of the first half.
The third nested loop (for(j=1; j<=5; j++)) in this part of the code prints the third set of numbers (increasing order) or spaces, similar to the first nested loop.
The fourth nested loop (for(k=4; k>=1; k--)) prints the fourth set of numbers (decreasing order) or spaces, similar to the second nested loop.
Again, System.out.println(); is used to move to the next line after each row.
The entire pattern is formed by the combination of the first half and the second half of the pattern.
The program finishes executing, and the pattern is displayed in the console.

💯 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!