Object Oriented Programming Articles - Page 80 of 701

In the given problem statement we have to group a sorted array based on the difference between the current and previous elements with the help of Javascript functionalities. To group a sorted array based on the difference between the current and previous items we can iterate over the array and create a new array of groups. Understanding the Problem Statement The above problem statement states that we have to find out the group of elements based on the difference between the current and previous elements in the array. As we have given a sorted array so we need ... Read More

In this problem we have to create an algorithm to get the highest and lowest value difference of an array with the help of Javascript functionality. So we will solve the problem with for loop and initialization of highest and lowest values to Infinity. Understanding the logic of the problem statement The problem statement is asking to write the code for getting the highest and lowest value difference of the array. So for solving this task we will initialize two variables, these variables will store the highest and lowest values. And then iterate through every element ... Read More

For a given list of elements, write a JavaScript program to find the sum of its odd and even indexed elements and then, calculate difference between them. To solve this problem, we will first separate odd indexed and even indexed elements. After separating them find their sum separately and store it in different variables. Now, we will calculate the difference between these sums to get desired result. Example Scenario: Input: list = [11, 21, 31, 41, 51, 61]; Output: difference = 30 Here, odd-indexed items are [21, 41, 61] and their sum is 123. The even-indexed items are ... Read More

In the given problem statement, our aim is to get the average of all the items with the help of the reduce method of Javascript. So for doing this task we will create a function and give an array as a parameter. Understanding the problem statement We have given a task to calculate the average value of the given items in the array. And we have to use the reduce method which is a predefined method of Javascript. For example if we have an array as [1, 2, 3, 4, 5], so the average value of the ... Read More

In this problem statement our aim is to write an algorithm to remove duplicate items from an array with a function with the help of Javascript functionalities. Understanding the problem statement In the above problem statement we have to create a function by which we can accept an array as a parameter and give a new array to store the unique items from the given input array and without including the identical values. For example - suppose we have an array as [0, 0, 2, 2, 3, 3] so after removing the duplicate numbers we will have ... Read More

In this article we will discuss algorithm and complexity for converting string with separator to array of objects with the help of Javascript functionalities. For doing this task we will use split and map functions of Javascript. Understanding the problem statement The problem statement says to write a function which can convert a given string with the given separator into an array of objects in Javascript. For example, if we have a string "name1, name2, name3" and a separator ", " then we have to convert these strings into an array of objects which looks like: [{value: ... Read More

In the provided problem statement, our aim is to get all substrings of a string recursively with the help of Javascript. So here we will be creating a recursive function that can generate all possible substrings of a given input string. Understanding the problem statement The problem statement is asking us to create a recursive function which can generate all the possible substrings of a given input string with the help of Javascript. A substring is any continuous sequence of characters within the input string. For example: input strings “xy" so the possible substrings are "x", "y", and "xy". Algorithm ... Read More

In the given problem we are required to retrieve the key and values from an object in an array with the help of Javascript. So here we will retrieve the keys and values from an object in an array with the help of two methods provided by the object class in Javascript. Understanding the Problem Statement The problem statement is to retrieve the keys and values from a given object in an array with the help of Javascript. So in Javascript the object is a collection of properties in which every property is a key and value pair. ... Read More

In the given problem statement our task is to get the partial sum in an array of arrays with the help of Javascript functionalities. So we will calculate the sum of rows and give the result. Understanding the Problem The problem at hand is to compute the partial sum of an array of arrays. So first understand what an array of arrays is! Array of arrays means each item represents an array itself. For example see the below array of arrays: [ [11, 12, 13], [14, 15, 16], [17, 18, 19] ] The partial sum at ... Read More

We are required to write a JavaScript function that takes in two dates in the 'YYYY-MM-DD' format as the first and second argument respectively. The function should then calculate and return the number of days between the two dates.For example −If the input dates are −const str1 = '2020-05-21'; const str2 = '2020-05-25';Then the output should be −const output = 4;Exampleconst str2 = '2020-05-25'; const daysBetweenDates = (str1, str2) => {    const leapYears = (year, month) => {       if (month (year * 365) + leapYears(year, month) + monthDays[month] + d; let p = days(...str1.split('-').map(Number));   ... Read More