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A matrix is a rectangular array of numbers arranged in rows and columns. To multiply two matrices, We multiply each row of the first matrix by each column of the second matrix and add the results to get a new matrix. An example of the multiplication of two matrices is as follow: Steps for Matrix Multiplication To multiply the matrices, we use pointers in C++, which means we directly access the elements through their memory addresses to read and calculate the values. Below are the steps we took: We first define the number ... Read More
A matrix is a rectangular array of numbers arranged in rows and columns. To find the transpose of a matrix, we arrange the rows of the original matrix as columns in a new matrix. Similarly, the columns can also be arranged as rows. An example of the transpose of a matrix is as follows: Finding Transpose of a Matrix To find the transpose of a matrix in C++, we use multidimensional arrays to store matrix values in rows and columns. Then, we swap the rows and columns to get the transpose. Below are the steps we followed: ... Read More
Python variable is a name that you give to something in your program. It basically helps you keep track of objects, which are things like numbers, words or any other data. When you assign an object to a variable, you can use that name to refer to that object later. The data, on the other hand, is still contained within the object. For example, a is assigned the value 100. Here 'a' is a variable. a = 100 This assignment creates an integer object with the value 100 and assigns the variable a to point to that object. In ... Read More
In this article, we will see the differences between two common ways of adding elements to lists in Python: the append method and the "+" operator. The append() method is used to add elements to the list by utilizing a mutator() method. The '+' operator is used to create a new list with the capacity for one more element. Behaviour of "+" with Python Lists Python accesses each element of the first list by using the '+' operator. When the '+' symbol is used, a new list with the capacity for one more element is produced. The old ... Read More
Sequence Data Types are used to store data in containers in the Python programming language. The different types of containers used to store the data are List, Tuple, and String. Lists are mutable and can hold data of any type, whereas Strings are immutable and can only store data of the str type. Tuples are immutable data types that can store any sort of value. So let's discuss these data types one by one in the coming section - List The sequential data-type class includes the list data type. The list is the only mutable data type in the sequential ... Read More
No, we can not place any code after throw statement, it leads to compile time error. The compiler will show this error as unreachable statement. In Java, the throw statement immediately terminates the current flow of execution, therefore, the code immediate to a throw statement will not be executed. The control is then transferred to the next catch block or the caller method. The throw Keyword in Java The throw keyword is used to throw an exception manually. Whenever it is required to stop the execution of the functionality based on the user-defined logical error condition, we will use this ... Read More
Lists are one of the four most commonly used data structures provided by Python. A list is a data structure in Python that is mutable and has an ordered sequence of elements. In Python, a list is like a box in which you can keep many things like numbers, names, or your favorite fruits. Let us say you have a list like this: fruits = ["apple", "banana", "mango"] Here, each fruit has a position in the list. But in Python, we start counting from 0, not 1. So here is the indexing of apple, banana, and mango - ... Read More
The in operator in Python In Python, the in operator determines whether a given value is a constituent element of a sequence such as a string, array, list, or tuple. When used in a condition, the statement returns a Boolean result of True or False. The statement returns True if the specified value is found within the sequence. When it is not found, we get a False. In Python, a list is an ordered sequence that can hold several object types such as integer, character, or float. In other programming languages, a list is equivalent to an array. Square brackets ... Read More
In Python, a list is an ordered sequence that can hold several object types such as integer, character, or float. In other programming languages, a list is equivalent to an array. In this article, we will show you how the * operator works on a list in python. So we will show you different examples to understand how * works on a python list in the below section − Repetition Operator(*) A repetition operator is supported by sequence datatypes (both mutable and immutable). The repetition operator * creates several copies of that object and joins them together. When used with ... Read More
List is one of the most commonly used data structures provided by python. List is a data structure in Python that is mutable and has an ordered sequence of elements. In this article, we will discuss how to add objects to a list and the different ways to add objects, such as append(), insert(), and extend() methods, in Python. Using append() method In this method, we use append() to add objects to a list. The append() method adds a new element to the end of a list that already exists. Example 1 In this example, we used the append() method ... Read More