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Articles by Ankita Saini
Page 11 of 23
Swift Program to Find the Sum of the Boundary Elements of a Matrix
In this article, we will learn how to write a swift program to find the sum of the boundary elements of a matrix. Boundary elements of a matrix are those elements that are present on the boundary of the matrix that are elements in the first row, last row, first column, and last column. For example − Given Matrix: 2 4 5 6 7 8 4 5 6 7 3 2 3 4 5 6 2 1 1 1 1 1 1 1 3 4 3 4 3 4 2 2 2 2 2 2 Boundary elements are: ...
Read MoreSwift Program to Find the Trace and Normal of a given Matrix
In this article, we will learn how to write a swift program to find trace and normal of a given matrix. Calculating the Trace of a given Matrix Trace is known as the sum of primary diagonal elements of the given square matrix. For example, we have a 3x3 square matrix − 2 3 4 3 4 6 1 3 2 So the primary diagonal elements are 2, 4 and 2. Hence the trace of the given 3x3 matrix is 2+4+2 = 8. Algorithm Step 1 − Define the size of the matrix. Step 2 − Create a ...
Read MoreSwift Program to Interchange Elements of First and Last Rows of a Matrix
In this article, we will learn how to write a swift program to interchange the elements of first and last in a matrix across rows. Therefore, to interchange the elements we need to swap the elements of the first row with the elements of the last row of the given matrix. For example − Original matrix: 2 4 5 6 3 4 6 2 6 7 7 2 1 1 1 1 So after swapping the first and last rows we get: 1 1 1 1 3 4 6 2 6 7 7 2 2 4 5 6 ...
Read MoreSwift Program to Interchange the Diagonals of a Matrix
In this article, we will learn how to write a swift program to interchange the diagonals. Therefore, to interchange the diagonals we need to swap the elements of primary diagonal with the elements of secondary diagonal of the given matrix. For example − Original matrix: 2 4 5 6 3 4 6 2 6 7 7 2 1 1 1 1 So after swapping diagonals we get: 6 4 5 2 3 6 4 2 6 7 7 2 1 1 1 1 Algorithm Step 1 − Create a function. Step 2 − Run a for loop ...
Read MoreSwift Program to Print Boundary Elements of a Matrix
In this article, we will learn how to write a swift program to print boundary elements of a matrix. Boundary elements of a matrix are those elements that are present on the boundary of the matrix that are elements in the first row, last row, first column, and last column. For example − Given Matrix: 2 4 5 6 7 8 4 5 6 7 3 2 3 4 5 6 2 1 1 1 1 1 1 1 3 4 3 4 3 4 2 2 2 2 2 2 Boundary elements are: 2 4 5 6 ...
Read MoreSwift Program to Interchange Elements of First and Last Columns of Matrix
In this article, we will learn how to write a swift program to interchange the elements of first and last in a matrix across columns. Therefore, to interchange the elements we need to swap the elements of the first column with the elements of the last column of the given matrix. For example − Original matrix: 2 4 5 6 3 4 6 2 6 7 7 2 1 1 1 1 So after swapping the first and last column we get: 6 4 5 2 2 4 6 3 2 7 7 6 1 1 1 1 ...
Read MoreSwift Program to Display Lower Triangular Matrix
In this article, we will learn how to write a swift program to display lower triangular matrix. Lower triangular matrix is a matrix in which all the elements above primary diagonal are zero. As shown in the below image: $$\mathrm{\begin{bmatrix} 1 & 0 & 0 & 0 & 0 & 0ewline 3 & 5 & 0 & 0 & 0 & 0ewline 1 & 4 & 6 & 0 & 0 & 0ewline 1 & 2 & 2 & 2 & 0 & 0ewline 4 & 5 & 6 & 1 & 2 & 0ewline 1 & 1 & 1 ...
Read MoreSwift Program to Calculate Average Using Arrays
In this article, we will learn how to write a swift program to calculate averages using an array. Average is defined as the ratio of the sum of the elements present in the given sequence to the total number of elements available in the given sequence. The general formula of average is − Average = (p1+p2+p3+..+pn)/n Here we use the following methods to calculate the average using array − Using pre−define functions Without using predefine functions Method 1: Using Pre-Define Functions To find the average of the given array, we use reduce() method to find the sum ...
Read MoreSwift Program to Find the Transpose
In this article, we will learn how to write a swift program to find the transpose of a matrix. Transpose of a matrix is calculated by interchange the rows of a matrix into columns or columns of a matrix into rows. For example, we have the following matrix: $$\mathrm{X\:=\:\begin{bmatrix} 13, & 59, & 32, & 67 ewline 23, & 56, &89, & 3 ewline 98, & 3, & 32, & 43 ewline 6, & 90, & 43, &23 \end{bmatrix}}$$ So the transpose of matrix X is − $$\mathrm{X^{T}\:=\:\begin{bmatrix} 13, & 23, & 98, & 6 ewline 59, ...
Read MoreSwift Program to Sort the Elements of an Array in Descending Order
In this article, we will learn how to write a swift program to sort the elements of an array in descending order. To sort the elements of an array Swift provides an in-built function named sort(by:). This function takes one argument and then sorts the array according to the condition passed in the by parameter. So to sort the array in descending order we pass > in the by the parameter of the sort(by:) function. Syntax func sort(by:) Here sort(by:) is an instance method. Which will sort the given sequence according to the value of by: parameter. Here ...
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