Java Recursive Methods: Exercises, Practice, Solution

Last update on July 16 2023 16:13:51 (UTC/GMT +8 hours)

Java Recursive Exercises [15 exercises with solution]

[An editor is available at the bottom of the page to write and execute the scripts. Go to the editor]

1. Write a Java recursive method to calculate the factorial of a given positive integer.

2. Write a Java recursive method to calculate the sum of all numbers from 1 to n.

3. Write a Java recursive method to calculate the nth Fibonacci number.

4. Write a Java recursive method to check if a given string is a palindrome.

5. Write a Java recursive method to calculate the exponentiation of a number (base) raised to a power (exponent).

6. Write a Java recursive method to reverse a given string.

7. Write a Java recursive method to find the greatest common divisor (GCD) of two numbers.

8. Write a Java recursive method to count the number of occurrences of a specific element in an array.

9. Write a Java recursive method to find the sum of all odd numbers in an array.

10. Write a Java recursive method to find the length of a given string.

11. Write a Java recursive method to generate all possible permutations of a given string.

12. Write a Java recursive method to find the maximum element in an array.

13. Write a Java recursive method to calculate the product of all numbers in an array.

14. Write a Java recursive method to find the sum of the digits of a given integer.

15. Write a Java recursive method to check if a given array is sorted in ascending order.

More to Come !

* To run the code mouse over on Result panel and click on 'RERUN' button.*

Java Code Editor

Do not submit any solution of the above exercises at here, if you want to contribute go to the appropriate exercise page.