Page 123 - CTS - CSA TP - Volume 2

COMPUTER SOFTWARE APPLICATION - CITS

• The calculated factorial is returned to the main method, where it is stored in the factorial variable.

• Finally, we print the factorial of n to the console.

TASK 4: Generating Fibonacci Series

public class FibonacciDemo {
public static void main(String[] args) {
int n = 10;
// Calling the method to generate Fibonacci series

System.out.println(“Fibonacci series:”);
for (int i = 0; i < n; i++) {
System.out.print(fibonacci(i) + “ “);
}
}

// Method to generate the nth Fibonacci number
public static int fibonacci(int n) {
if (n <= 1) {
return n;
} else {

return fibonacci(n - 1) + fibonacci(n - 2);
}
}
}
Output:

Explanation:
• In this program, we define a method fibonacci that takes an integer n as a parameter and returns the n-th
Fibonacci number.
• We declare a variable n in the main method and assign a value to it.
• We iterate from 0 to n in the main method and print the Fibonacci series using the fibonacci method.
• Inside the fibonacci method, we use recursion to calculate the Fibonacci number for each value of n.
• The calculated Fibonacci number is returned to the caller.

These examples illustrate how to return data from methods in Java. The calculateFactorial method returns the
factorial of a number, while the fibonacci method returns the nth Fibonacci number. Returning data from methods
allows us to perform calculations and computations, making our code more modular and reusable.

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CITS : IT & ITES - Computer Software Application - Exercise 96