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In this article, we will access a specific character from a string by using the charAt() method in Java. The program will demonstrate how to locate and display a character at a specified position within a string. Problem Statement We have a string, and we need to retrieve the character at a given position. For example, if we use the string "laptop", we want to display the character located at the 4th position (0-based index). Input "laptop" Output String: laptop Character at 4th position: t Steps to access character of a string The following an steps to access the ... Read More
The set covering is a well-known NP-hard problem in the combinational optimization technique. We call the set cover problem NP-Hard because there is no polynomial real-time solution available for this particular problem. An algorithm called greedy heuristic is a well-known process for the set cover problem. Here is an example − Let U be the universe of elements, {S1, S2, .....Sm} be collection of subsets of the set, U and Cost(S1), C(S2), ......Cost(Sm) be costs of subsets. 1)Let I is the set of elements included so far. Initialize the process I = {} 2) Do following ... Read More
In this article, we will learn how to generate a string representation of the contents of arrays in Java. Using Arrays.deepToString() transforms arrays into readable strings, making it easy to visualize their structure. This method is particularly useful for one-dimensional and multidimensional arrays. Problem StatementGiven arrays with varying structures, write a Java program that prints the elements of these arrays and their string representations using Arrays.deepToString().Input A one-dimensional array:Object[] ob = {"One", "Two", "Three", "Four"} A two-dimensional array:int[][] arr = {{10, 20, 30}, {40, 50, 75}, {100, 150, 200}}Output For the one-dimensional array:Array elements...Value = OneValue = TwoValue ... Read More
This Java article discusses the InputStream.close() function to close the input stream and free up system resources. The method java.io.InputStream.close() is used to close this input stream and release any system resources associated with the stream. This method requires no parameters and returns no value. Also, the IOException is thrown when an I/O error occurs. Problem StatementGiven an input stream, write a Java program to close this input stream and release any system resources associated with it. Ensure that the program handles any exceptions that may occur if the stream is already closed or an I/O error is ... Read More
To add multiple font files for the same font using CSS, is essential to display your webpage correctly across all devices. For this purpose it is important to include multiple font files for the same font. In this article, we will be understanding two different approaches to add multiple font files for the same font using CSS. Approaches to Add Multiple Font Files for Same Font Here is a list of approaches to add multiple font files for the same font using CSS which we will be discussing in this article with stepwise explaination and complete example codes. ... Read More
We have given two strings consisting of integers and can have lengths up to 200. both strings do not contain any leading 0, but 0 as the number itself can be present. We have to multiply integer strings, so we need to find a solution. Let's see how we can tackle this problem in an easier way. Suppose we have two numbers as strings. We need to multiply them and return the result, also in a string. For example, if the numbers are "26" and "12", then the result will be "312". Following are various ways to ... Read More
In this article, we will cover C++ programs to work with natural numbers. we use natural numbers in various operations, such as indexing arrays, performing loops, and validating user input. we will also write code to demonstrate how natural numbers can be used for these purposes in C++. Natural Numbers are a set of positive numbers, starting from 1 and going to infinity. natural numbers are: 1, 2, 3, 4, 5... etc In C++, understand concepts like conditions, loops, and how we store and manipulate variables. We will provide everything you need to know about natural numbers along with programs. ... Read More
Programmers have been using scripting languages for quite some time. When it comes to Linux and Unix computers, scripting languages were mostly utilised for things like scripting tasks that automate platform customizations, software installations, and one-shot command line jobs with bash scripts. Groovy is an authentically creative language that runs on the same virtual machine as Java. Hence, it can interact with Java in a way that is both efficient and effective. Despite the fact that Java is one of the most popular and commonly used programming languages for producing content for the web, certain activities, such as file handling ... Read More
The pre-processor is a tool that processes the source code before it passes through the compiler. It work as an initial phase of compilation where it operates under the control of different command lines or directives. Pre-processor Directives in C Pre-processor is placed in the source program before the main line, it begins with the symbol "#" in column one and does not require a semicolon at the end. The commonly used pre-processor directives are − #define #undef #include #ifdef #endif #if #else The pre-processor directives are divided into three categories − Macro substitution directives. File inclusion ... Read More
Fundamental Data Types in C Primary data types, also known as fundamental data types, are built-in data types in C. C compilers support four fundamental data types. They are as follows − Integer Character Floating-point Double precision floating-point Primary data types are the building blocks for storing and working with different kinds of data in C. Below, we will provide a brief overview of these data types. Integral Data Types Integral data types are used to store whole numbers and characters. These are the most important data types for programming because they define how data is represented in ... Read More