This is something you write only after the profiler says your previous palindrome checker function is a CPU/resource hog, a bug report says it isn't reporting a

This is something you write only after the profiler says your previous palindrome checker function is a CPU/resource hog, a bug report says it isn't reporting all palindromes correctly, and your manager gives you the okay to spend as much time as you need to fix it forever (but really only spend like 30-40 minutes, mmkay?).