PYTHON SUPER FAST SOLUTION
\tdef removeDuplicates(self, s: str) -> str:\n\t\tres=[]\n        for x in s:\n            if len(res)>0 and res[-1]==x:\n                res.pop()\n           
\tdef removeDuplicates(self, s: str) -> str:\n\t\tres=[]\n        for x in s:\n            if len(res)>0 and res[-1]==x:\n                res.pop()\n            else:\n                res.append(x)\n        return \'\'.join(res)\n
['Python']