The manager will let you solve a problem thru coding/algorithm explanation which involves your colleague messing with your computer. Expect that your colleague copied/moved random files/directories in the C directory. It's up to you on how you will revert back its original state.
Sigiloso
The manager is expecting to hear these words. ARRAY for storing scanned files/directories, LOOPING statement to iterate the process and CHECKSUM to see if the two scanned files/directories are the same (even if the file has different filename)