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The determinant of a square matrix can be computed using its element values. The determinant of a matrix A can be denoted as det(A) and it can be called the scaling factor of the linear transformation described by the matrix in geometry. An example of the determinant of a matrix is as follows. The matrix is: 3 1 2 7 The determinant of the above matrix: = 7*3 - 2*1 = 21 - 2 = 19 So, the determinant is 19. Steps to Compute Determinant of a Matrix We find the determinant using a method called recursive Laplace ... Read More
Two matrices are said to be multiplicable if they can be multiplied. This is only possible when the number of columns of the first matrix is equal to the number of rows of the second matrix. Our goal is to check whether the given matrices are multiplicable or not using C++. Let's understand this with an example: Number of rows in Matrix 1 = 3 Number of columns in Matrix 1 = 2 Number of rows in Matrix 2 = 2 Number of columns in Matrix 2 = 5 Matrix 1 and Matrix 2 are multiplicable because ... Read More
In a computer system, the octal number is expressed in the octal numeral system while the decimal number is in the decimal numeral system. The octal number is in base 8 while the decimal number is in base 10. In this article, we will write a C++ program that converts a decimal number into an octal number. Examples of decimal numbers and their corresponding octal numbers are as follows. ... Read More
In a computer system, the octal number is expressed in the octal numeral system while the decimal number is in the decimal numeral system. The octal number is in base 8 while the decimal number is in base 10. In this article, we will write a C++ program to convert an octal number to a decimal number and vice-versa. Here are some examples showing decimal numbers and their corresponding octal values: ... Read More
An object is an instance of a class. The memory is allocated only when an object is created and not when a class is defined. How to Return an Object in C++? An object can be returned by a function using the return keyword. There is no specific technique to return an object, you can simply return it just like any other data type returning from the function. Consider the following syntax. Syntax The syntax for returning an object from the function is as follows: class_name function_name(class_name obj1) // Passing object { class_name obj2; ... Read More
Virtual Base ClassVirtual base classes are used in virtual inheritance. It is a way of preventing multiple instances of given classes occurs in the inheritance hierarchy when using multiple inheritance. Why We Use Virtual Base Class? The use of a virtual base class ensures that only one shared instance exists in memory. Virtual base class prevents duplicate base class copies in multiple inheritance. Virtual base classes provide efficient memory management. It avoids redundant copy of base class variables. It ... Read More
Declaring Multiple Classes in Java Program A single Java program may contain two or more classes, it is possible in two ways: Multiple non-nested classes Nested classes The Multiple non-nested Classes We can create as many classes as we want in a single Java program but writing many classes in a single file is not recommended as it makes code difficult to read rather we can create a single file for every class. When we compile a Java program with two or more classes (non-nested), the same number of .class ... Read More
Yes, C++ virtual functions can have default parameters. The default parameter is the value provided during function declaration, such that the value can be automatically assigned if no argument is passed to them. In case any value is passed the default value is overridden and becomes a parameterized argument. Virtual Function A virtual function is a member function declared in a base class and can be overridden in a derived class. When we use a pointer or reference to the base class to refer to an object of the derived class, you can call a virtual function for that object. ... Read More
The compareTo() and compare() methods are both used to compare two objects. They return an int value after comparison, which tells if both objects are equal, if not, which is lesser, and which is greater. The primary difference between these two methods is that the compareTo() method is used when the Comparable interface is implemented, whereas the compare() method is used when the Comparator interface is implemented. Let's understand the use of compareTo() and compare() methods in Java, and then we will discuss how these two methods are different from each other. The compareTo() Method in Java The compareTo() method compares the ... Read More
The bitap algorithm is fuzzy string matching algorithm that is used to find approximate matches between a pattern and a text. The algorithm determines whether a given text contains a substring that is "approximately equal" to a given pattern, where approximate equality is defined in terms of Levenshtein distance (or number of edits) if the substring and pattern are within a given distance k of each other, then according to the algorithm they are equal. It begins by precomputing a set of bitmasks containing one bit for each element of the pattern. So we can do most of the work with ... Read More