Given an array of strings strs, group the anagrams together. You can return the answer in any order.
An Anagram is a word or phrase formed by rearranging the letters of a different word or phrase, typically using all the original letters exactly once.
Example 1:
Input: strs = ["eat","tea","tan","ate","nat","bat"] Output: [["bat"],["nat","tan"],["ate","eat","tea"]]
Example 2:
Input: strs = [""] Output: [[""]]
Example 3:
Input: strs = ["a"] Output: [["a"]]
Constraints:
1 <= strs.length <= 1040 <= strs[i].length <= 100strs[i]consists of lowercase English letters.
class Solution:
def groupAnagrams(self, strs: List[str]) -> List[List[str]]:
m = {}
for item in strs:
s = ''.join(sorted(item))
if s not in m:
m[s] = [item]
else:
m[s].append(item)
return list(m.values())