49. Group Anagrams.py

class Solution:
    def groupAnagrams(self, strs: List[str]) -> List[List[str]]:
        s_map = {}
        for s in strs:
            key = ''.join(sorted(s))
            if key not in s_map:
                s_map[key] = [s]
            else:
                s_map[key].append(s)
        return s_map.values()