Java Number Pattern 41

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 41

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;
  int m = 1;
  for(i=1; i<=9; i+=2)
  {
   for(j=i; j<9; j++)
    System.out.print("  ");
   for(k=1; k<=i; k++)
   {
    System.out.format("%4d", m*m);
    m++;
   }
   System.out.println();
  }
 }
}

💻 Testing the Program

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

Output

                  1
              4   9  16
         25  36  49  64  81
    100 121 144 169 196 225 256
289 324 361 400 441 484 529 576 625

🧠 How the Program Works

Let's break down the logic behind the code:

public class Demo: This line declares the start of a Java class named "Demo".
public static void main(String[] args): This is the main method, the entry point for the program. It takes an array of strings as input arguments. In this case, the main function initializes variables and contains nested loops for printing patterns of numbers.
int i, j, k;: Three integer variables i, j, and k are declared to control the loops.
int m = 1;: An integer variable m is initialized with the value 1. This variable is used to generate squared numbers.
The outer for loop: for(i = 1; i <= 9; i += 2): This loop runs from i = 1 to i = 9 in steps of 2 (odd numbers only). It controls the rows of the pattern.
The first inner for loop: for(j = i; j < 9; j++): This loop prints spaces before the numbers. The number of spaces is determined by the value of i. It ensures that the numbers are right-aligned in the pattern.
The second inner for loop: for(k = 1; k <= i; k++): This loop prints the squared values of m. The inner loop runs i times, and in each iteration, it prints the squared value of m with formatting.
System.out.format("%4d", m * m);: This line uses the System.out.format method to print the squared value of m with a width of 4 characters. This ensures that the numbers are aligned properly.
m++;: After printing the squared value, the m variable is incremented to prepare for the next iteration.
System.out.println();: After each row of squared numbers is printed, this line moves to the next line to start a new row.

💯 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!