## Insert a Node at Specific Position in Linked List HackerRank – Python

Data manipulation tasks frequently include insert a node at a specific position in linked list. We must first determine the position in a linked list where we wish to insert the new node. After selecting the place, we must search the attached list for the node that precedes the required position. So, to add a new node to the list, we may update the pointers of the old node and the new node.

## Insert a Node at The Tail of a Linked List Hackerrank Solution

Four stages may describe the process of adding a node to the end of a linked list. To insert data, we must first construct a new node. The second step is to traverse the linked list to find the last node. Setting the “next” pointer of the previous node to point to the new node is the third step. Setting the “next” pointer of the new node to NULL is the fourth and last step.

## Roman Numerals Decoder Codewars

Every symbol in Roman has a value associated with it. For example, X has a value of 10. Similarly, V has a value of 5. You need to add all the associated values, and you will get the number. For example, XXV where X=10 and V=5. Adding X+X+V = 10+10+5 = 25. But the Problem Arises when you have numbers like 4, 9, 40, etc. 9 is represented as IX in Roman, but if we apply the above technique. We will get I + X = 1 + 10 = 11. It is not Correct. When decoding Roman numerals, one thing to keep in mind is that, whenever the previous character in Roman is less than the current, we must subtract instead of Add. For Example, 4 is represented as IV in Roman, I has the value of 1, and V has a value of 5. so IV = 1 – 5 = abs(-4) = 4

## Sparse arrays hackerrank solution JavaScript and Python

Firstly declare a list to store the returned list. Secondly, Declare an outer loop which loops through the queries list. Write another loop which will iterate through the values present in stringList List. Declare a counter too, to count the number of occurrences queries element present inside the string List. Check if Element i of Queries List is equal to the element j of stringList. Push the Counter variable inside your returned List

## Bfinject

Bfinject is a programme that can be used to inject payloads into built executables on Windows and Linux. Not just iOS. However, iOS has a very distinct architectural and security approach. It is not a technology that would generally be utilised on that platform.

## Descriptive Statistics in Data Science

The structure, synthesis, and interpretation of data are the focus of descriptive statistics, a subfield of data science. It is employed to clarify and appreciate a dataset’s essential properties, including its distribution, dispersion, and central tendency.. Using descriptive statistics to prepare the data for inferential statistics-based analysis is a critical stage in the data analysis process. Data scientists may find patterns, trends, and insights using various tools and methods.

## Companies Who Use Data Mining

The practise of obtaining useful information from huge data collections is known as data mining. Data mining is used by businesses across several sectors to gather insights and improve choices. Wikipedia. Here are a few Companies Who Use Data Mining: Companies Who Use Data Mining Retail businesses: These businesses gather a ton of information on … Read more

## C++ for Everyone – Second Edition

Cay S. Horstmann’s thorough introduction to the C++ programming language is titled “C++ for Everyone, Second Edition.” It offers a comprehensive overview of the language and its capabilities and is designed to be approachable for both novice and seasoned programmers. You can Download the PDF of this book at the end of the Post. If … Read more

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## Database Systems Concepts 7th Edition Solutions – Chapter 3

Database Systems Concepts 7th Edition Solutions is a highly recommended book for people interested in databases. The free version of this book can be downloaded from HERE. Practice Excercise 3.1 Write the following queries in SQL, using the university schema. (We suggest you actually run these queries on a database, using the sample data that we … Read more

## Five Essential Characteristics of Cloud Computing defined by NIST

The Simple Definition of Cloud Computing is Delievery of On-demand Computing Resources. The Five Essential Characteristics of Cloud Computing defined by NIST are On-Demand Self-service, Broad Network Access, Resource Pooling, Rapid Elasticity and Measured Resources. Cloud Computing defined by NIST A model for enabling Convienient, on-demand network access to shared pool of configurable computing resources … Read more