In this task, you are given a string with duplicate characters ocurring in the string. You need to return the character which is ocurring with the maximum frequency. In case of a tie, return the character with the least ascii value.
--------
Question: hwvlewesuyvclzffpxvmgkxsiifqbzdiqybtfutlktgllsfe

Answer: f


Question: ujksgfumsawrdverpmngnjecntcxxxznwcoxxhkx

Answer: x


Question: sexbnsakynuwphmdznxgdbmrrbxhxyjjtewqdsztxtflg

Answer:
x