时间O(nlog(n)),空间O(n),按题目中Note“只用O(1)的空间”,照理是过不了的,但是可能判题并没有卡空间复杂度,所以也能AC。 classSolution:# 基本思路为,将第一次出现的数字deffindDuplicate(self, nums:List[int]) ->int: s =set()foriinnums: a = iinsifa ==True:returnielse: s.add(i) 双...
代码(Python3) class Solution: def findDuplicate(self, paths: List[str]) -> List[List[str]]: # content_to_paths 维护文件内容对应的所有文件路径列表 content_to_paths: defaultdict = defaultdict(list) # 遍历所有路径 for path in paths: # 按照空格分隔,第一个是文件夹路径 parts: List[str] =...
In the improved duplicate finder, create a second List to hold the duplicates. First try to add items to the HashSet, and if the HashSet indicates the item is already in the set, add that duplicate to the List: List<Object> myList = List.of(0, 1, 1, 2, 3, 5, 6, 0, 0, 1...
代码(Python3) class Solution: def findDuplicate(self, nums: List[int]) -> int: # 二分区间左边界,初始化为 1 l: int = 1 # 二分区间右边界,初始化为 n r: int = len(nums) - 1 # 当前区间不为空时,继续二分 while l <= r: # 计算区间中点 mid mid: int = (l + r) >> 1 #...
Python代码:class Solution(object): def findDuplicate(self, paths): """ :type paths: List[str] :rtype: List[List[str]] """ filemap = collections.defaultdict(list) for path in paths: roads = path.split() directory, files = roads[0], roads[1:] for file in files: file_s = file...
Python代码: class Solution(object): def findDuplicate(self, paths): """ :type paths: List[str] :rtype: List[List[str]] """ filemap = collections.defaultdict(list) for path in paths: roads = path.split() directory, files = roads[0], roads[1:] ...
Finding the index of an item in a list: In this tutorial, we will learn how to find the index of a given item in a Python list. Learn with the help of examples.BySapna Deraje RadhakrishnaLast updated : June 26, 2023 Given aPython listand an item, we have to find the index of ...
Here, we have a list of tuples and we need to find all the tuples from the list with all positive elements in the tuple. Submitted by Shivang Yadav, on September 02, 2021 Python programming language is a high-level and object-oriented programming language. Python is an easy to learn, ...
"FindDuplicate"是一款专门用于查找重复图片、代码和字符串的工具,旨在帮助用户高效地管理和清理他们的文件库。该工具通过强大的算法和比对技术,能够快速准确地识别出相同或相似的文件,让用户轻松发现并删除冗余内容,节省存储空间并提高工作效率。无论是在整理照片、整合项目文件还是优化数据库,FindDuplicate都能帮助用户...
Therefore, you need to return above trees’ root in the form of a list. 题目大意 找出一个二叉树中所有的重复子树。重复子树就是一棵子树,在大的二叉树中出现的次数不止一次。 解题方法 暴力解法不可取。 参考了[LeetCode] Find Duplicate Subtrees 寻找重复树才明白,我们要找到一个重复的子树,可以把树...