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Articles on Trending Technologies
Technical articles with clear explanations and examples
How to Count the Number of Unique Rows (Combinations of Multiple Columns) in Excel?
Excel is a strong programme that is frequently used for managing and analysing data. Finding the number of unique rows based on combinations of several columns is a typical problem in data analysis. This enables us to locate and examine particular data sets inside a dataset. When working with huge datasets or trying to find unique records in a dataset containing duplicate entries, counting the number of unique rows is especially helpful. Several built-in functions and methods in Excel can be used to efficiently complete this operation. This tutorial will take you step-by-step through the procedure, enabling you to efficiently ...
Read MoreMultiple Digit Decimal Display (4 Digits)
What is a Multiple Digit Decimal Display? A type of electronic display which is used to show multiple digits of decimal numbers is called a multiple digit decimal display. A most extensively used type of multiple digit decimal display in digital systems is a 4-digit display. The 4-digitl display is able to display decimal numbers between 0 and 9999 (largest 4 digit number). The most common application of these multiple digit decimal displays is in digital calculators, digital watches and clocks, and in many other electronic devices that need to display information in the form of decimal numbers. Let us ...
Read MoreIncompletely Specified Functions in Boolean Algebra
What is an Incompletely Specified Function? In Boolean algebra, a Boolean function or logic function whose output values are known for a subset of its inputs and has output which is a don’t care condition for at least one of its input combinations is called an incompletely specified function. Hence, in an incompletely specified function, the value of the function for don’t care combinations can be selected either a 0 or a 1 depending on the fact that which one leads to be the more minimal solution of the function. For these combinations, the Karnaugh map (K-Map) entry is marked ...
Read MoreHow to run JavaTuples program in Eclipse?
Tuples in Java are an ordered collection of objects of different types. To run Tuple in Java, you need to upload an external jar file. Here, we will be using Eclipse IDE to create a new Java Project and upload the JavaTuples external jar file. The JavaTuples jar file is to be downloaded. Let us first download the jar file, create an Eclipse project and import the downloaded jar file. Here are the steps − Step 1 − Download JavaTuples Jar library and save it on your system. Open the GitHib link github.com/javatuples/javatuples/downloads and download the “javatuples-1.2-dist.zip” as shown below ...
Read MoreCorollaries of Binomial Theorem
The Binomial Theorem describes how to expand an expression raised to any finite power. A binomial theorem is a powerful expansion tool that has applications in algebra, probability, and other fields. Assume we have an expression $\mathrm{(x\:+\:y)^n}$and we need to expand the expression, we can do this using the generalised equation of binomial theorem. The binomial theorem defines a binomial expression for two different terms. The general equation of binomial theorem is: $$\mathrm{(a+b)^{n}=^n{C_{r=0}}a^{n-r}b^{0}\:+\:^n{C_{r=1}}a^{n-1}b^{1\:}+\:........\:+\:^n{C_{r=n-1}}a^{1}b^{n-1}+^n{C_{r=n}}a^{0}b^{n}}$$ $$\mathrm{=n_{\sum_{r=0}}^n{C_{r}}a^{n-r}b^{r}}$$ Where we can get the value of $\mathrm{^n{C_{r}}}$ using the formula, $$\mathrm{^n{C_{r}}=\frac{n!}{(n-r)!r!}}$$[0! is always equals to 1] NOTE There ...
Read MoreWays to choose three points with distance between the most distant points <= L
The problem states that we need to figure out the number of ways to choose three points with distance between the most distant points less than or equal to L, a positive integer that will be given as an input. In the problem we will be given an array of different points which lies on the x-axis and an integer L greater than 0. The task involves finding the number of sets of three points where the distance between the most distant points is less than or equal to that integer L. NOTE : The set of points ...
Read MoreTwo Odd Occurring Elements in an Array where all Other Occur Even Times
The problem includes finding two odd occurring elements in an array where all other elements occur even times in C++. An array is a data structure in C++ which is used to store a list of elements in it of similar data types. We will be given an array of any size greater than or equal to 2 in input. The array will contain integers in it. Every integer in the array will occur even times except two integers which will be occurring odd times in the array. In this problem, we need to find out those two elements ...
Read MoreSum of Product of r and rth Binomial Coefficient (r * nCr)
The problem states that we must determine the sum of the product of r and the rth binomial coefficient (r*nCr). Positive numbers that are coefficients in the binomial theorem are called binomial coefficients. Both Pascal's triangle and a straightforward formula can be used to determine the binomial coefficients. The formula for binomial coefficient is: $$\mathrm{n_{c_{r}}=\frac{n!}{(n-r)!r!}}$$ NOTE : The value of 0! is always equal to 1. In this equation n and r can be any non-negative integers and r should never be greater than n. The objective at hand in this problem entails computing the ...
Read MoreDifference Between Autism and Speech Delay
Autism and speech delay are two distinct developmental disorders that can affect children from a very young age. Autism, also known as Autism Spectrum Disorder (ASD), is a neurodevelopmental disorder that affects social communication and behavior, while speech delay is a delay in the development of speech and language skills. While there may be some overlap in symptoms between the two, there are also significant differences between autism and speech delay. What is Autism? Autism is a developmental disorder characterized by − Problems with communication; Problems with social interaction; Repetitive behavior; Behavioral restrictions Children with autism have a ...
Read MoreSet the Rightmost Unset Bit
The problem statement includes setting the rightmost unset bit of any positive integer N in C++. A bit is simply a binary digit of any number when represented in the form of a binary number. A binary number is the numerical representation of any data in the form of 0 and 1 where every bit(digit) of the number represents the power of 2 starting with 2^0 from the unit digit. Let's represent an integer 7 in the form of a binary number. The binary representation of 7 will be 111. These numbers can either be represented ...
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