Write the following RECURSIVE methods (non-recursive methods will receive no credit!):

Remember: the basic process for creating a recursive method is to first determine the base case and then build the method.

String reverseString(String s)

This method returns the string with the characters in reverse order. For example:

reverseString("FOX") returns "XOF"

String insertCommas(int num)

This method takes a positive integer parameter and returns a string representing that integer with commas in appropriate places. The method might be called as follows:

System.out.print(insertCommas(1000000)); //prints "1,000,000"

(Hint: recurse by repeated division and build the string by concatenating after each recursive call.)

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