# Java Recursive Methods: Exercises, Practice, Solution

## Java Recursive Exercises [15 exercises with solution]

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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More to Come !

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