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Enter the array elements and then, arrange the numbers in descending order by using the swapping technique. Later on, with the help of an index location, try to print the second largest and the second smallest element in an array.An array is used to hold the group of common elements under one name.The array operations in C programming language are as follows −InsertDeleteSearchAlgorithmGiven below is an algorithm to find the second largest and the second smallest numbers in an array −Step 1 − Declare and read the number of elements.Step 2 − Declare and read the array size at runtime.Step ... Read More
The index of a particular element in an ArrayList can be obtained by using the method java.util.ArrayList.indexOf(). This method returns the index of the first occurrence of the element that is specified. If the element is not available in the ArrayList, then this method returns -1.A program that demonstrates this is given as follows.Example Live Demoimport java.util.ArrayList; import java.util.List; public class Demo { public static void main(String[] args) { List aList = new ArrayList(); aList.add("Orange"); aList.add("Apple"); aList.add("Peach"); aList.add("Guava"); aList.add("Mango"); ... Read More
In this tutorial, we will learn to check whether a JavaScript date is valid or not. Let’s understand why we need to validate the date in JavaScript by example. Suppose you have developed an application that takes some information in the submission form from the user. Users can make a mistake. What if they enter the wrong date in the input box? In such a case, developers need to validate the date. Here, we have three different methods to validate the date. Using the getTime() Method Using the isFinite() Method Using the Moment JS isValid() Method Using the ... Read More
Abstraction is a process of hiding the implementation details of a system from the user, and only the functional details will be available to the user end. On the other hand, Encapsulation is a method of wrapping up the data and code acting on the data into a single unit. Read this article to find out more about abstraction and encapsulation and how they are different from each other. What is Abstraction? Abstraction is defined as a process of hiding the implementation details of a system from the user. Thus, by using abstraction, we provided only the functionality of the ... Read More
To check if a number is prime or not, the code is as follows −Example Live DemoOutputIt is a prime numberA function named check_prime() is used to check if the number is prime or not. A number that needs to be checked for being prime is passed as a parameter to the function. The number is defined and this function is called by passing the number as parameter. Relevant message is displayed on the console.
An Entry widget in Tkinter is nothing but an input widget that accepts single-line user input in a text field. To return the data entered in an Entry widget, we have to use the get() method. It returns the data of the entry widget which further can be printed on the console.ExampleThe following example will return the input data that can be used to display in the window with the help of a Label Widget as well.#Import the required libraries from tkinter import * from tkinter import ttk #Create an instance of Tkinter Frame win = Tk() #Set the ... Read More
In this tutorial, we will look at how to get the first and last date of the current month using JavaScript. In our daily lives, we frequently deal with dates, and we typically are aware of the day—or, at the very least, the month—we are in. To assist users in determining when something has occurred or will occur concerning their current situation, we display the name of a day or a month. This serves as a wonderful chronology. Following are the approaches to get the first and last date of the month using JavaScript − Using a Date Object ... Read More
To change the file owner and group, we use the chown command in the Linux operating system.We know that Linux is a multiuser operating system so every file or directory belongs to an owner and group.To change ownership of files or directories we use chown command in the Linux system. This command is also available in the IBM i operating system. The chgrp command is also used to change only the group ownership of the file in the Linux system.SyntaxThe general syntax of the chown command is as followschown [OPTION]... [OWNER] [: [GROUP]] FILE... chown [OPTION]... --reference=RFILE FILE...A brief description ... Read More
The java.util.ArrayList.contains() method can be used to check if an element exists in an ArrayList or not. This method has a single parameter i.e. the element whose presence in the ArrayList is tested. Also it returns true if the element is present in the ArrayList and false if the element is not present.A program that demonstrates this is given as followsExample Live Demoimport java.util.ArrayList; import java.util.List; public class Demo { public static void main(String[] args) { List aList = new ArrayList(); aList.add("A"); aList.add("B"); aList.add("C"); aList.add("D"); ... Read More
To plot multiple boxplots in one graph in Pandas or Matplotlib, we can take the following steps −StepsSet the figure size and adjust the padding between and around the subplots.Make a Pandas data frame with two columns.Plot the data frame using plot() method, with kind='boxplot'.To display the figure, use show() method.Exampleimport pandas as pd import numpy as np from matplotlib import pyplot as plt # Set the figure size plt.rcParams["figure.figsize"] = [7.50, 3.50] plt.rcParams["figure.autolayout"] = True # Pandas dataframe data = pd.DataFrame({"Box1": np.random.rand(10), "Box2": np.random.rand(10)}) # Plot the dataframe ax = data[['Box1', 'Box2']].plot(kind='box', title='boxplot') # Display ... Read More