TASK DEFINITION: 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.
PROBLEM: tzrraklcaztmvloaykewzxzkxjnpnotqkjnbxxfuslup

SOLUTION: k

PROBLEM: qgbaxitnjwrvtckdraygpzqbugoirzymzauhnnwsre

SOLUTION: r

PROBLEM: usnxshlksjfzwaggwgmnddpcpkfhwgarulcajpjyutxpdryf

SOLUTION:
g