Java Number Pattern 47

Posted in Java Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 129 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

Java Number Pattern 47

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

Demo.java

Copied

public class Demo
{
 public static void main(String[] args)
 {
  int i, j;
  int k = 5;
  // First Part	
  for(i=k; i>=1; i--)
  {
   for(j=k; j>=1; j--)
   {
    if(j > i)
     System.out.print(j +" ");
    else
     System.out.print(i +" ");
   }
   for(j=2; j<=k; j++)
   {
    if(j > i)
     System.out.print(j +" ");
    else
     System.out.print(i +" ");
   }
   System.out.println();
  }   
  // Second Part
  for(i=2; i<=k; i++)
  {
   for(j=k; j>=1; j--)
   {
    if(j > i)
     System.out.print(j +" ");
    else
     System.out.print(i +" ");
   }
   for(j=2; j<=k; j++)
   {
    if(j > i)
     System.out.print(j +" ");
    else
     System.out.print(i +" ");
   }
   System.out.println();
  }
 }
}

💻 Testing the Program

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

Output

5 5 5 5 5 5 5 5 5
5 4 4 4 4 4 4 4 5
5 4 3 3 3 3 3 4 5
5 4 3 2 2 2 3 4 5
5 4 3 2 1 2 3 4 5
5 4 3 2 2 2 3 4 5
5 4 3 3 3 3 3 4 5
5 4 4 4 4 4 4 4 5
5 5 5 5 5 5 5 5 5

🧠 How the Program Works

Let's break down the logic behind the code:

Class Definition: The program defines a class named Demo.
Main Method: The main method is the entry point of the program.
Variable Declarations:
- int i, j; declares two integer variables i and j that will be used for looping.
- int k = 5; initializes an integer variable k with the value 5.
First Part:
- The program enters a nested loop structure for the first part of the pattern.
- The outer loop (for(i=k; i>=1; i--)) runs from k (5) down to 1.
- The inner loop (for(j=k; j>=1; j--)) also runs from k (5) down to 1.
Pattern Printing (First Part):
- Inside the nested loops, there are conditional statements that determine whether to print j or i at each position.
- If j > i, it prints the value of j, otherwise, it prints the value of i.
- The nested loops are used to print the left half and right half of the pattern separately.
Second Part:
- The program enters another set of nested loops for the second part of the pattern.
- The outer loop (for(i=2; i<=k; i++)) runs from 2 to k (5).
- The inner loop (for(j=k; j>=1; j--)) also runs from k (5) down to 1.
Pattern Printing (Second Part):
- Similar to the first part, the nested loops have conditional statements to determine the printing of j or i.
- This part prints the left and right halves of the pattern, mirroring the first part but with increasing values of i.
Output:
- After both parts are executed, the program prints the complete pattern, which is a combination of two parts.
- The pattern consists of lines with varying sequences of numbers.
Loop and Pattern Iteration:
- The program iterates through the nested loops in the first and second parts, printing the pattern in each iteration.
- The pattern has a symmetric structure, with decreasing and increasing sequences on either side of the center.
Program Termination:
- Once both parts have been executed, the program terminates.

💯 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!