Group Anagrams
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.
class Solution:
def groupAnagrams(self, strs):
anagram_map = defaultdict(list)
for word in strs:
sorted_word = ''.join(sorted(word))
anagram_map[sorted_word].append(word)
return list(anagram_map.values())
In this video instead of using the sorted word, he manually builds up a key based on the counts of the characters in the word. This is fine but there isn't any benefit to doing it this way. It's actually slower.
Related Problems
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