A collection of recursion problems written in python language. codes that are included in this repository are:

1. element uniqueness: recursively check whether if an element in an array is unique or not.
2. exponential: recursively calculate exponentiations of a number(base).
3. GCD: recursively calculate Greatest Common Divisors of two number.
4. harmonic number: recursively calculate the n-th harmonic number.
5. logarithm: recursively calculate the integer part of the logarithm of a number in an arbitrary base.
6. man and max: recursively find the minimum and maximum values of an array.
7. palindrome: recursively check whether a given string is palindromic or not.
8. pascal: recursively calculate the n-th row of pascal's triangle.
9. product: recursively evaluate the value of two number multiplication.
10. reverse string: recursively find the reverse of a given string.
11. string of digits: recursively convert a string of digits to integers.
12. subset: recursively generate the powerset of a given set.