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Articles on Trending Technologies
Technical articles with clear explanations and examples
Sorting or Arranging an Array with standard array values - JavaScript
We are required to sort a dynamic JavaScript array. The condition is that we are required to sort it according to the values stored in a particular order in a standard predefined array.Let’s say the following is our dynamic array −const dbArray = ['Apple', 'Banana', 'Mango', 'Apple', 'Mango', 'Mango', 'Apple'];And suppose the standard array against which we have to sort the above array is like −const stdArray = ['Mango', 'Apple', 'Banana', 'Grapes'];So, after sorting the dbArray, my resultant array should look like −const resultArray = ['Mango', 'Mango', 'Mango', 'Apple', 'Apple', 'Apple', 'Banana'];ExampleFollowing is the code −const dbArray = ['Apple', 'Banana', ...
Read MoreGet value of an input box using Selenium (Python)
We can get the value of an input box with Selenium webdriver. The get_attribute() method is capable of obtaining the value we have entered in an input box. To get the value, we have to pass value as a parameter to the method.First of all, we have to identify the input box with the help of any of the locators like id, class, name, css or xpath. Then we have to type some values inside it with the send_keys() method.Let us consider the below input box where we shall enter some texts - Selenium Python and then fetch the value ...
Read MoreFinding letter distance in strings - JavaScript
We are required to write a JavaScript function that takes in a string as first argument and two single element strings. The function should return the distance between those single letter stings in the string taken as first argument.For example −If the three strings are −const str = 'Disaster management'; const a = 'i', b = 't';Then the output should be 4 because the distance between 'i' and 't' is 4ExampleFollowing is the code −const str = 'Disaster management'; const a = 'i', b = 't'; const distanceBetween = (str, a, b) => { const aIndex = str.indexOf(a); ...
Read MoreFinding shared element between two strings - JavaScript
We are required to write a JavaScript function that takes in two strings that may / may not contain some common elements. The function should return an empty string if no common element exists otherwise a string containing all common elements between two strings.Following are our two strings −const str1 = 'Hey There!!, how are you'; const str2 = 'Can this be a special string';ExampleFollowing is the code −const str1 = 'Hey There!!, how are you'; const str2 = 'Can this be a special string'; const commonString = (str1, str2) => { let res = ''; for(let i ...
Read MoreAdding a function for swapping cases to the prototype object of strings - JavaScript
In JavaScript, we can write our own custom functions and assign them to the existing standard data types (it is quite similar to writing library methods but in this case the data types are primitive and not user defined. We are required to write a JavaScript String function by the name, let’s say swapCase().This function will return a new string with all uppercase characters swapped for lower case characters, and vice versa. Any non-alphabetic characters should be kept as they are.ExampleFollowing is the code −const str = 'ThIS iS A CraZY StRInG'; String.prototype.swapCase = function(){ let res = ''; ...
Read MoreMapping the letter of a string to an object of arrays - JavaScript
Given a string, we are required to write a function that creates an object that stores the indexes of each letter in an array. The letters (elements) of the string must be the keys of objectThe indexes should be stored in an array and those arrays are values.For example −If the input string is −const str = 'cannot';Then the output should be −const output = { 'c': [0], 'a': [1], 'n': [2, 3], 'o': [4], 't': [5] };ExampleFollowing is the code −const str = 'cannot'; const mapString = str => { const map = ...
Read MoreDetermining full house in poker - JavaScript
The “full house in poker” is a situation when a player, out of their five cards, has at least three cards identical. We are required to write a JavaScript function that takes in an array of five elements representing a card each and returns true if there's a full house situation, false otherwise.ExampleFollowing is the code −const arr2 = ['K', '2', 'K', 'A', 'J']; const isFullHouse = arr => { const copy = arr.slice(); for(let i = 0; i < arr.length; ){ const el = copy.splice(i, 1)[0]; if(copy.includes(el)){ ...
Read MoreHow to get selected option using Selenium WebDriver with Java?
We can get a selected option in a dropdown in Selenium webdriver. The method getFirstSelectedOption() returns the selected option in the dropdown. Once the option is fetched we can apply getText() method to fetch the text.Let us consider the below dropdown Continents get its selected item−Exampleimport org.openqa.selenium.By; import org.openqa.selenium.WebDriver; import org.openqa.selenium.WebElement; import org.openqa.selenium.chrome.ChromeDriver; import java.util.concurrent.TimeUnit; import org.openqa.selenium.support.ui.Select public class SelecedItem{ public static void main(String[] args) { System.setProperty("webdriver.chrome.driver", "C:\Users\ghs6kor\Desktop\Java\chromedriver.exe"); WebDriver driver = new ChromeDriver(); String u =" https://www.tutorialspoint.com/selenium/selenium_automation_practice.htm"driver.get(u); driver.manage().timeouts().implicitlyWait(5, TimeUnit.SECONDS); // identify element ...
Read MorePHP Name Resolution Rules
IntroductionIn a PHP code, appearance of namespace is resolved subject to following rules −A namespace identifier without namespace separator symbol (/) means it is referring to current namespace. This is an unqualified name.If it contains separator symbol as in myspace\space1, it resolves to a subnamespace space1 under myspace. Such type of naming is relative namespace.Name of fully qualified namespace starts with \ character. For example, \myspace or \myspace\space1.Fully qualified names resolve to absolute namespace. For example \myspace\space1 resolves to myspace\space1 namespaceIf the name occurs in the global namespace, the namespace\ prefix is removed. For example namespace\space1 resolves to space1.However, if it occurs ...
Read MoreFinding average word length of sentences - JavaScript
We are required to write a JavaScript function that takes in a string of strings joined by whitespaces. The function should calculate and return the average length of all the words present in the string rounded to two decimal placesExampleFollowing is the code −const str = 'This sentence will be used to calculate average word length'; const averageWordLength = str => { if(!str.includes(' ')){ return str.length; }; const { length: strLen } = str; const { length: numWords } = str.split(' '); const average = (strLen - numWords + 1) / numWords; ...
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