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Articles by Ankita Saini
230 articles
How to Calculate the Value of nPr in Swift?
nPr is known as n permutation r, where n represents the total numbers and r represents the arrangement of the elements. A permutation is known as the arrangement of elements in a specified order. Elements can arrange either in a sequence or in a linear order, for example, we have a set of elements [2, 4], so the permutation is: [4, 2], [2, 4]. In permutation the order of elements matters whereas in combination the order of the elements does not matters. We can calculate the value of nPr with the help of the following formula: Formula nPr = ...
Read MoreTech number in Swift
If the given number contains an even number of digits and the digits of the number can be divided into two equal parts from the middle. After dividing the digits sum up the divided digits and find the square of the final sum. If the square is equal to the sum itself then the given number is a tech number otherwise not. Example Demonstration Input 3025 Output Yes the given number is a tech number Input 2341 Output No the given number is not a tech number Here, 3025 is a ...
Read MoreSwift Program to Print Floyd’s Triangle
Floyd triangle is right angle triangled which is named after Rober Floyd. It is created with the help of natural numbers starting from 1 in the top left corner and then the consecutive numbers are filled in the specified rows. Example Demonstration Input 4 Output 1 2 3 4 5 6 7 8 9 10 Here, the size of Floyd’s triangle is 4. So it will print Floyd’s triangle until 4 rows. In Swift, we can print Floyd’s triangle using the following methods: Using for−in loop Using while loop Using recursive function Algorithm ...
Read MoreHow to Write Calculator Program using Switch Case in Swift
A Calculator is an electronic device which is used to perform different types of mathematical operations like subtraction, addition, division, multiplication, etc. We can also create a calculator using Switch case and simple arithmetic operations in Swift programming. It will also perform the same mathematical operations as the original calculator. Example Demonstration Enter any two numbers: Number 1: 43 Number 2: 234 SIMPLE CALCULATOR 1. Addition 2. Subtraction 3. Multiplication 4. Division 5. Percentage Choose (1/2/3/4/5): 2 Result = -191.0 Here, we first enter the numbers on which we want to perform the ...
Read MoreHow to Swap Pair of Characters in Swift?
Swapping pair of characters is a process of interchanging the position of two characters in the given string. This operation is commonly used in various programming languages and applications to manipulate data. Example Input “mumbai” Output umbmia Input “Prita” Output rPtia Here, we divide the given string into a pair of characters like “mumbai”: “mu”, “mb”, “ai”. Now we swap the positions of the characters: “um”, “bm”, and “ia” and create the resultant string: “umbmia”. Similarly for input 2. In Swift, we can swap the pair of characters present in the given ...
Read MoreHow to Calculate the Volume of a Tetrahedron in Swift?
Tetrahedron is a triangular base pyramid. It is a platonic solid with four triangular faces, six straight edges and four vertex corners. Where each vertex is connected with every other vertex and each face is of an equilateral triangle. In Swift, we can calculate the volume of a tetrahedron using the following formula: Formula $$\mathrm{Area=(x*x*x*\sqrt{2})/12}$$ Here, x represents the sides of the tetrahedron. Algorithm Step 1 − Create a function which takes the side of the tetrahedron as a parameter and returns the volume. Step 2 − Inside the function, we use the mathematical formula to find the volume ...
Read MoreHow to Calculate the Area of a Tetrahedron in Swift?
Tetrahedron is a 3−D triangular pyramid shape whose base is also a triangle. Generally, a tetrahedron contains four equilateral triangles, hence it has interior angles of 60 degrees. In Swift, we can calculate the area of a tetrahedron using the following formula: Formula $$\mathrm{Area=\sqrt{3}*X*X}$$ Here, x represents the side of the tetrahedron. If you wish to find the area of one side of a tetrahedron then you can use the following formula: Formula $$\mathrm{Area\:of\:one\:side\:of\:tetrahedron =(\sqrt{3}*y*y)/4}$$ Here, y represents the side of the tetrahedron. Algorithm Step 1 − Create a function which takes the side of the tetrahedron ...
Read MoreSwift Program to Check if a String is Numeric
To check if the given string is numeric or not we use Double() initializer in Swift Programming. A string is an ordered collection of characters for example “Sky”. A string can be numeric and non-numeric. A numeric string is a string which only contains numbers for example “12345”. So the valid numeric strings are: “3423”, “222333”, “34.342”, etc., whereas non-valid numeric strings are “23hfd23”, “423131sdd”, etc. So it converts the given string into double and return true if the given string is numeric otherwise return false. Algorithm Step 1 − Create a function Step 2 − Return ...
Read MoreSwift Program to get the flattened 1D array
Swift has various functions like flatmap(), compactmap(), reduce() to flatten an 1D array. An array is used to store elements of same data type in an order whereas a set is used to store distinct elements of same data type without any definite order. Method 1: Using flatmap() Function To flatten 2D array into 1D array we can use flatmap() function. The flatmap() function return an array by concatenating the sub arrays into a single array. Syntax func flatMap{_res} Here, res is a closure which accepts the element of the specified array as its argument and return a flattened ...
Read MoreSwift Program to get the subarray from an array using a specified range of indices
In swift, we have various methods like Array() initializer and for-in loop that can be used for getting the subarray from an array using a specified range of indices. An array stores elements of the same data type in an order. Let’s understand both the methods in detail in this article. Method 1: Using Array() initialiser To get the subarray from an array using a specified range of indices we uses Array() initialiser. Here we find the subarray using range operator and then convert the elements into the array using Array() initialiser. Algorithm Step 1 − Create an ...
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