every blog every motto: You will never know unless you try
0. 前言
生活好难,再坚持坚持!
1. 字符串
1.1 题目
1.2
class Solution:
def groupAnagrams(self, strs: List[str]) -> List[List[str]]:
# 字典
map = collections.defaultdict(list)
for s in strs:
count = [0] * 26
for c in s:
count[ord(c)-ord('a')] += 1 # 统计字符
# 哈希
map[tuple(count)].append(s)
return list(map.values())