How do I go about finding the outputs for parts a and b?

5. (10 pts) What does the following function return for each input case of a and b below? int puzzle (char val, int a, int b) f if (a > b) ) else if (val[a]val[b]) ) else return l; return puzzle (val, a+1, b-1); return 0 a. val-{'k', 'a, 'y', 'a', 'k') a 0 b-4 b 5 0