Design and implement a recursive program to produce the following output:
0
0 1
0 1 2
0 1 2 3
0 1 2 3 4
0 1 2 3
0 1 2
0 1
0
Your program should prompt the user for the total number of rows she wishes to print. You may not use any loops in the this program.
Implement a method that will take as input a String representing an absolute path to a directory. The method will recursively traverse the directory and print all files in any descendant directory ending in .mp3. The method header is as follows: