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题目描述: python提交: import collections class UndergroundSystem: def __init__(self): self.idloop = collections.defaultdict(list) self.count = collections.d 阅读全文
摘要:
题目描述: python提交:O(N^3) class Solution: def numTeams(self, rating: List[int]) -> int: ans = 0 for i in range(len(rating)): for j in range(i,len(rating)) 阅读全文
摘要:
题目描述: python提交: from typing import List import collections class Solution: def findLucky(self, arr: List[int]) -> int: dic = collections.Counter(arr) 阅读全文