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The Linear Congruential Generator (LCG) is a very simple technique to generate a sequence of numbers that looks like random numbers but is actually determined. It is one of the reasons to call it a pseudo-random number. The Linear Congruential Generator (LCG) technique generates a random number based on the previous number and uses a linear recurrence to generate the sequence of random numbers. In this article, we have set an initial value of Xn and defined the value of the constants. Our task is to generate pseudo-random numbers using the linear congruential generator in C++. Formula of Linear ... Read More
To sort less than 100 numbers in O(N) complexity, we can use the counting sort technique. The counting sort is a stable and non-comparison-based sorting technique, that is used to sort the objects according to the keys that are small integers. It counts the number of keys whose key values are same. It works by counting the occurrences of elements in the array. This sorting technique is efficient when difference between different keys are not so big, otherwise it can increase the space complexity. In this article, we have an unsorted array containing twelve elements. Our task is to sort ... Read More
The merge sort technique is based on the divide-and-conquer technique. We divide the whole data set into smaller parts and merge them into a larger piece in sorted order. It is also very effective for worst cases because this algorithm has lower time complexity for worst cases too. A linked list can be sorted using merge sort very efficiently. For the linked list, the merging task is very simple. We can simply update the links to merge them. In this article, we have an unsorted linked list. Our task is to sort the given unsorted list using the merge ... Read More
Counting sort is a stable and non-comparison-based sorting technique, that is used to sort the objects according to the keys that are small integers. It counts the number of keys whose key values are same. It works by counting the occurrences of elements in the array. This sorting technique is efficient when difference between different keys are not so big, otherwise it can increase the space complexity. In this article, we have an unsorted array. Our task is to implement the counting sort algorithm to sort the given unsorted array in C++. Example Here is an example of ... Read More
In this article, we will learn to select one item at a time from a JCheckBox in Java. When creating Java Swing applications, you might have situations where you need checkboxes to behave like radio buttons, such that a box can be checked singly at any given time. JCheckBox A JCheckBox can extend JToggleButton, and it can be a small box that is either checked or unchecked. When we click on a JCheckBox, it changes from checked to unchecked or vice versa automatically. Syntax The following is the syntax for JCheckBox initialization: JCheckBox checkBox = new JCheckBox("Option"); A JCheckBox can ... Read More
In this article, we will learn to set the background color of a JPanel in Java. When designing GUIs in Swing, changing the background color of panels is important for creating visually appealing applications. What is a JPanel? A JPanel is a container, and it is an invisible component in Java. The FlowLayout is a default layout for a JPanel. We can add most of the components, like buttons, text fields, labels, tables, lists, trees, etc., into a JPanel. Syntax The following is the syntax for JPanel initialization: JPanel panel = new JPanel(); Methods The important methods of JPanel are: ... Read More
In this article, we will learn to make a JTextField accept only numbers in Java. By default, a JTextField can allow numbers, characters, and special characters. Validating user input that is typed into a JTextField can be difficult, especially if the input string must be converted to a numeric value such as an int. Different Approaches The following are the two different approaches for making a JTextField accept only numbers in Java: Using a KeyListener Using DocumentFilter Using a KeyListener The KeyListener interface handles keyboard events, making it straightforward to ... Read More
The dot operator (.) in C++ is a member access operator, which is used to access the members (variables and functions) of a class, structure, and union through an object. It allows you to access and manipulate the properties of an object's data members and member functions. The dot (.) operator is used for various purposes. Here is the following list of its uses. Accessing Data Members Calling Member Functions Working with nested structures /Objects Chained Function Calls ... Read More
In this article, we will learn how to count the number of elements in a stream using the counting() method in Java Streams. Java Streams provide an efficient way to process data collections, and the Collectors.counting() method is useful for counting the number of elements in a stream. The counting() method is a static method of the Collectors class, which is part of the java.util.stream package. It returns a long value representing the number of elements in the stream. Counting the Number of Elements in the Stream The following are the steps to count the number of elements in the ... Read More
A String class can be used to represent character strings; all the string literals in Java programs are implemented as instances of the String Class. In Java, Strings are constants and their values cannot be changed (immutable) once declared.Printing Maximum Occurred Character The maximum occurring character of a string refers to the character that appears multiple times (more than any other character in a string) in a string. To count the maximum occurring character of a string, we have the following approaches - Using an Array Using HashMap Using an Array Using an array is one way to ... Read More