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Articles by Gireesha Devara
Page 6 of 18
Python Program to get the last item from the array
An array is a data structure, which is used to store collection of homogeneous data elements. And each element in the array is identified by an index value or key. Arrays in python Python doesn’t have a built-in data structure to represent arrays, but it has a built-in array module for work with arrays. And also we can use the NumPy package. An array defined by the array module is − array('i', [1, 2, 3, 4]) A Numpy array defined by the NumPy module is − array([1, 2, 3, 4]) Also, we can use the pythob list ...
Read MorePython Program to get the subarray from an array using a specified range of indices
An array is a homogeneous data structure, which is used to store a set of elements of the same data type. And each element in the array is identified by key or index value. Subarray A subarray is defined as a small part of continuous elements of an array. if we take an array of 5 integer elements like below. [9, 3, 1, 6, 9] Then the subarrays will be − [9, 3] [9, 3, 1] [3, 1, 6, 9] Arrays in Python In Python we don't have a specific data structure to represent arrays. However, ...
Read MorePython Program to push an array into another array
In programming array is a data structure, which is used to store collection of homogeneous data elements. And each element in the array is identified by an index value. But Python doesn’t have a specific data type to represent arrays. Instead, we can use the List as an array. Arrays in Python Here, we are representing List as an array. [1, 4, 6, 5, 3] The indexing in python starts from 0, so that the above array elements are accessed using their respective index values 0, 1, 2, 3, 4. Pushing an array into another array means, ...
Read MorePython Program to convert an array into a string and join elements with a specified character
An array is a data structure consisting of a collection of elements of the same data type, and each element is identified by an index. [2, 4, 0, 5, 8] Arrays in Python Python does not have its own data structure to represent an array. Instead, we can use the list data structure to represent an array. Here, we will use list an array − [10, 4, 11, 76, 99] In the article, we will write a python programs to convert an array to a string and join elements with a specified character. ...
Read MorePython Program To Determine If a Given Matrix is a Sparse Matrix
A matrix is a rectangular array where the set of numbers arranged in rows and columns. And it is called as an m X n matrix where m and n are the dimensions. If a matrix contains a very less number of non-zero elements compared to the zero elements then it is called a sparse matrix. [0, 0, 3, 0, 0] [0, 1, 0, 0, 6] [1, 0, 0, 9, 0] [0, 0, 2, 0, 0] The above matrix is 4X5 matrix here most of the numbers are zero. Only a few elements are non-zero so that we can ...
Read MorePython Program to Display Upper Triangular Matrix
A matrix is a two-dimensional array of many numbers arranged in rows and columns. A square matrix (whose rows and columns has same number of elements) has two diagonals. One is the Primary diagonal - located from the top left corner to the bottom right corner of a square matrix. And the second one is the Secondary diagonal - located from the top right to the bottom left corner. For a square matrix if all the elements below the Primary diagonal are zero then it is called the Upper Triangular Matrix. [1, 3, 4] [0, 5, 6] [0, ...
Read MorePython Program to Recursively Linearly Search an Element in an Array
Linear search is the simplest method of searching for an element in an array. It is a sequential searching algorithm that starts from one end and checks every element of the array until the desired element is found. Recursion means a function that calls itself, while using a recusive function we need to use any loop to generate the iterations. The below syntax demonistrates the working of a simple recursion function. def rerecursiveFun(): Statements ... rerecursiveFun() ... rerecursiveFun Linear Search of an Element ...
Read MorePython Program To Find the Trace and Normal of a given Matrix
A matrix is defined as a set of numbers arranged in rows and columns. A matrix with m rows and n columns is called an m X n matrix and m and n are called its dimensions. A matrix is a two dimensional array, which is created by using lists or NumPy arrays in python. The Trace of a Matrix The trace of a matrix is defined as the sum of its diagonal elements (i.e, elements from upper left to lower right ). Calculating the Trace of a matrix can be possible only for a square matrix (i.e., the matrix ...
Read MorePython Program to Multiply to Matrix Using Multi-dimensional Arrays
A matrix is a set of numbers arranged in rows and columns. A matrix with m rows and n columns is called an m X n matrix and m and n are called its dimensions. A matrix is a two dimensional array, which is created by using lists or NumPy arrays in python. In general, Matrix multiplication can be done by multiplying the rows of the first matrix by the column of the second matrix. Here, the number of columns of the first matrix should be equal to the number of rows of the second matrix. Input Output Scenarios Assuming ...
Read MorePython Program to Add Two Matrix Using Multi-dimensional Array
A matrix is a two-dimensional array of many numbers arranged in rows and columns. The addition of two matrices is a process of adding corresponding elements of two matrices and placing the sum in corresponding position of the resultant matrix. And this can be possible, only if both the matrices have an equal number of rows and columns. In Python multidimensional arrays are created by using lists or NumPy arrays. The list data structure can accept lists as elements so that we can easily create matrice. Also, the Numpy module provides numerous methods to work with multidimensional arrays. ...
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