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Server Side Programming Articles
Page 1633 of 2109
Sort an array containing two types of elements
There are different approaches to sort an array containing only two types of elements i.e., only 1’s and 0’s. We will discuss three different approaches to do so. First approach simply uses a predefined sort() function to sort the given array. Second approach is a count sort approach in which we will count the number of zeroes and ones and then update the array by first writing zero for the number of times 0 was counted and then writing 1’s for the number of times we counted one. In the last approach, we used the two pointer method. Problem statement ...
Read MoreExpressing factorial n as sum of consecutive numbers
We will discuss two approaches to find out how we can express the factorial of a number as the sum of consecutive numbers. First one is a straightforward and simple approach while in the other approach we use the concept of arithmetic progression to make it less complex in terms of time and space occupied. Problem statement We are given a number and we need to find out the number of ways in which we can represent the factorial of the number as a sum of consecutive natural numbers. This involves two different functions − To find the ...
Read MoreSorting array except elements in a subarray
This article is about how we can sort an array by neglecting a subarray of elements present in the same array. We will discuss two approaches for the same. The first approach is a brute force approach with time complexity O(n*n) while the second approach is by using an additional space to keep the sorted part of array other than the subarray. The time complexity of second approach is better i.e., O(nlogn). Problem Statement We are given an array of positive integers “nums” and two indices of the same array namely- left and right and we have to partially sort ...
Read MoreUndulating Numbers
In this article, we will learn what an undulating number is and our approaches to check whether a given number is undulating or not using a boolean function to check undulating numbers. Problem statement We will be given a number and our task is to check whether the given number is undulating. Let us first learn about an undulating number; An undulating number is a number that only consists of two types of digits and every second digit is the same. We can say an undulating number is of the form “PQPQPQ” where P and Q are two different digits ...
Read MoreSmallest triangular number larger than p
We will discuss triangular numbers and how we can find the smallest triangular number just larger than a given number “num”. We will first discuss what exactly is a triangular number and then will find out the smallest triangular number just larger than “num” We will see two different approaches for the same. In the first approach, we will run a simple loop to generate the output, while in our second approach, we will first generate a general formula for calculating the desired number and then will directly apply that formula to get the smallest triangular number. Problem Statement We ...
Read MorePandigital Product
We are given two numbers and our task is to find out whether the given number is obtained by multiplying two other numbers such that all three numbers together constitute a 9-digit pandigital number. In other words, it can be said that we have to find out whether the given number is pandigital after combining it with two other numbers which result in the original number on multiplication. We can have many such cases where we will get multiple solutions for this problem, to get the best time complexity, we will simply print the first ever solution found and stop ...
Read MoreMinimum Adjacent Swaps Required to Sort the given Binary Array
There are different approaches, we can use to minimize the number of swaps required on adjacent elements to get a sorted array. The given array as the output only contains two types of elements i.e., 0 and 1. We will discuss two different approaches to solve the problem in which the first solution uses extra space to store the number of zeroes, while the second one uses only constant space. Problem Statement We are given an array which contains only two types of elements 0 & 1. Our aim is to find out how many minimum swaps on adjacent elements ...
Read MoreWhat is the Swift equivalent of respondsToSelector?
In Swift, the equivalent of the Objective-C method respondsToSelector is the responds property of the NSObject class. To check if an object responds to a particular selector, you can use the responds(to:) method which is declared in the NSObjectProtocol. Here's the syntax − if objectName.responds(to: #selector(methodName)) { // do something if the object responds to methodName } else { // do something else if the object doesn't respond to methodName } In this syntax, objectName is the object that you want to check, and methodName is the selector that you want to check ...
Read MoreWhy is the Convenience Keyword Even Needed in Swift?
In Swift, you can create an additional initializer to provide default values for the properties. You can use the convenience keyword to add this functionality. Let's look at some examples of how to use a convenience initializer in the Swift language. What is a convenience initializer in Swift? In Swift, a secondary initializer in a class that provides extra or alternative ways to create an instance of that class is marked with the convenience keyword. The initialization procedure is streamlined and made simpler, which makes it easier for the developer to deal with the class. The designated initializer of the ...
Read MoreWhat\'s the equivalent of NSLocalizedString in Swift?
In real iOS applications, you often need to support localization to ensure the app's accessibility around the world. By incorporating localization into your app, you can gain more users. In Swift, we use the NSLocalizedString function to create a localized string. What is localization? Localization is the process of allowing various language support in your apps. Instead of utilizing the software in a single language, it helps to create a more localized experience for users. Localization will be quite simple to integrate in your application. Apple offers a totally native method for integrating localization in your program.Syntax The syntax for ...
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