Programming Articles - Page 541 of 3363

A number is said to be a pointer prime number, if the sum of the product value of digits and the original prime number results in the next prime number. For more clarification, we take a prime number and multiply the digits with each other and add that multiplication value with the original number. After that if we get another prime number which is next to the original prime number. Then we can say that the number is a pointer prime number. Some examples of pointer prime numbers are: 23, 61, 1123, 1231 ... etc. In this article, ... Read More

What is a Narcissistic Number? A number is said to be a Narcissistic number, only if the addition (or sum) of the value of each digit raised to the power of the total number of digits available in the original number is equal to the original number. Examples of narcissistic numbers, such as 153, 1634, 54748, etc. All single-digit numbers (0, 1, 2, 3, 4, 5, 6, 7, 8, 9) are Narcissistic numbers because the power of 1 of any digit will be the digit itself. The following input and output scenarios will help you understand the problem and calculation ... Read More

What is a Mersenne Number? A Mersenne number is a positive integer that is obtained using the expression M(n)= 2n-1, where 'n' is an integer. If you keep any value of n (e.g., 0, 1, 2, 3) in the above expression, the result will be a Mersenne number. For example, consider n = 2 and calculate the expression 22 - 1. The result is 3, which is a Mersenne number. Not all Mersenne numbers are prime (e.g., 24 - 1 = 15) is a mersenne number, which is not prime. Here are some other examples of Mersenne numbers: ... Read More

What is Empire Number? A number is said to be an Empire number if it is a prime number, and when we reverse that number, we should get another prime number. For example, let's consider the number 17. We know that 17 is a prime number, and if we reverse this number, we get 71, which is also a prime number. Therefore, 17 is known as an empire number. Here are some other examples of prime numbers such as 11, 13, 17, etc. Input & Output Scenarios Below are a few input and output scenarios that help to understand the ... Read More

Complex numbers are a very fundamental concept in modern science, the concept is first introduced in the early 17th century. Complex numbers are of the form a + ib, where a and b are real numbers. a is known as the real part and ib is known as the imaginary part of a complex number. In C++, there is a class to represent complex numbers which is the complex class. The complex class in C++ can represent and manipulate various operations on complex numbers. We take a look at how to represent, initialize, and display complex numbers. Initializing using the ... Read More

Complex numbers in C++ are available in the header and it enables a developer to represent and manipulate complex numbers. Complex numbers have the form a + ib, where 'a' is referred to as the complex number's real portion and 'ib' is the number's imaginary part. The imaginary portion is denoted by the letter 'i' whose value is "iota" which is equal to -1. Complex numbers are extremely important in many programs since they are employed in many mathematical and scientific processes. We take a look at how to represent complex numbers in C++ and how to convert a ... Read More

The gamma function is described as an extension of the factorial of every given number in mathematics. The factorial, on the other hand, can only be defined for real numbers, hence the gamma function exceeds to calculate the factorial on all complex values other than negative integers. It is represented by − $$\mathrm{\Gamma \left ( x \right )=\left ( x-1 \right )!}$$ The gamma function grows quickly for higher values; hence, applying logarithm to the gamma will greatly slow it down. The natural logarithm gamma of a particular number is another name for it. In this article, we will see ... Read More

In almost any modern programming languages, we find the few logarithm functions like natural logs, log with base 2, log with base 10 etc. But sometimes we need to calculate logarithm with different base which are not available in the given library functions. To achieve this goal we can use simple logarithmic formula. In this article we will see how to calculate logarithm values with a given number and a given base in C++. Formula to calculate logarithm with given base Let we have taken a number x, and its base is k which is also given. The ... Read More

Logarithms for base 10 are relatively required for natural computations in a variety of applications. For competitive examinations, there are a few quick ways to memorise a few log values. There are a few ways to compute logarithm results using library functions when programming, as well as a few shortcuts. In this post, we'll go through a couple methods for computing the base-10 logarithm of a given number in C++. Using log10() function One library function used to determine the base-10 logarithm for a given parameter is called log10(). An integer or a floating-point number could be the ... Read More

We will use the Haar cascade classifier to detect the license number plate in the image. A haar cascade classifier is an effective object detection method. It is a machine learning based approach. To train a number plate classifier, the algorithm initially needs a lot of positive images (images of number plates) and negative images (images without number plates). The classifier is trained from these positive and negative images. It is then used to detect objects (number plates) in other images. We can use already trained haar cascades for object detection. How to Download Haarcascade? You can find different ... Read More