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...
We are required to write a JavaScript function that takes in an array of literals, such that some array elements are repeated. We are required to return an array that contains that appear only once (not repeated). For example: If the array is:> const arr = [9, 5, 6, 8, 7, 7, ...
Write a Java program to find the two largest distinct elements in an array. Write a Java program to find the third smallest element in an array without sorting it. Write a Java program to find the second smallest element in an array using recursion. Write a Java program to find the Kth ...
Learn, how to find count of distinct elements in dataframe in each column in Python?Submitted by Pranit Sharma, on February 13, 2023 Pandas is a special tool that allows us to perform complex manipulations of data effectively and efficiently. Inside pandas, we mostly deal with a datas...
In Selenium, findElement and findElements are used to locate web elements, each serving a distinct purpose. Single vs. Multiple Elements: findElement locates a single element, while findElements finds multiple elements matching the given locator. ...
Count of duplicate elements:3Duplicate elements in the array:[1,3,5]Unique elements in the array:[2,4] 2. UsingStreamandSet Java Setclass stores only the distinct elements. We can use this feature to find the distinct elements in the array and then find unique and duplicate elements using...
The simplest use of np.unique() function is to find unique elements in a one-dimensional array −Open Compiler import numpy as np # Define a 1D array with duplicate values array = np.array([1, 2, 2, 3, 4, 4, 5]) # Find unique elements unique_elements = np.unique(array) print...
MongoDB中有两种方式进行OR查询:“$in”可以用来查询一个键的多个值,“$or”则更通用一些,可以用来完成多个键值对的组合。我们也分别演示一下:我们要查询奖券号码为10,20,30 的所有投注者的姓名: > db.raffle.find({}) {"_id" : ObjectId("50210091d6acd1b2a3fb3172"),"name" :"tim","ticket_no"...
What is Array.find() in TypeScript? Thefind()method returns the first element in an array that satisfies a specified testing function. If no elements satisfy the testing function, it returnsundefined. Array.find() is particularly useful when you need to locate a specific item within a collecti...
That’s all about finding the duplicate elements in a list in C#. Also See: Find duplicates in a List in C# Get frequency of elements from List in C# Find duplicates in an array in C# Rate this post Submit Rating Average rating4.89/5. Vote count:27 ...