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.

[Q]: nnfdmjgqitxwoatdhmlcbmpfoafabjnkougafpeyw
[A]: a


[Q]: wfbolaxitfinwcgbsydwzytrmgxplhkwiwrtgyudhfrgpjg
[A]: g


[Q]: nzdsgibxkugtesjpkvvncfckisjnlxehhnvfsbnambp
[A]:
n