Write a Python program to find the first duplicate element in a given array of integers. Return -1 if there are no such elements.Sample Solution:Python Code :def find_first_duplicate(nums): num_set = set() no_duplicate = -1 for i in range(len(nums)): if nums[i] in num_set: re...
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, ...
There are many approaches to find and identify duplicate elements in a list, from a brute-force tackling of the problem, to thesuper-efficient use of HashMapsand the Java Streams API. Assess your personal use case, and decide which approach works best for you....
packagecom.mkyong;importjava.util.*;importjava.util.function.Function;importjava.util.stream.Collectors;publicclassJavaDuplicated2{publicstaticvoidmain(String[] args){// 3, 4, 9List<Integer> list = Arrays.asList(5,3,4,1,3,7,2,9,9,4); Set<Integer> result = findDuplicateByGrouping(list)...
When a list contains two "Delhi" then the index() finds the "Delhi" when found it will end itself, and will not search for further elements but in the second method, it will start checking from starting to last element even the "Delhi" is found or not when "Delhi" found then it ...
x = lst.index('Mango')# Duplicate element print("Index of Mango: ", x) Output: Fruits: ['Apple','Mango','Banana','Mango','Cherry'] IndexofMango:1 Finding Index Within A Range In the previous example you saw howindex()method works with duplicate elements in a list. What if you ...
LeetCode 287. Find the Duplicate Number 暴力解法 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: ...
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] =...
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 #...
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 ...