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Lucy

  • Arrays are essential for completing programming tasks in any programming language. In fact, arrays refer to list objects with methods for performing mutation operations. The length of a JavaScript array and the types of its items are not fixed. Arrays in JavaScript are used to hold several values in a single variable.

  • Sorting often refers to arranging an array or collection of components in a specific order, such as ascending or descending order. Bubble Sort is the most straightforward sorting method, which repeatedly switches nearby components if they are in the wrong order. Due to its high average and worst-case time complexity, this approach is inappropriate for huge data sets.

  • If you have a number and wish to find its square root, multiply the number by its component plus itself. In this article, we’ll show you how to use the Java programming language to find the square root of any number. The precise syntax and coding for calculating square roots are covered along with examples since a Math.sqrt() is utilized for this purpose.

  • LinkedList is a linear data structure similar to arrays in Java. LinkedList elements, on the other hand, are not kept in contiguous locations like arrays; instead, they are linked together via pointers. Each LinkedList member has a reference (address/pointer) to the next LinkedList element.

  • Consider a table with a stack of plates. After the first one is placed on the table, the next one is placed on top of it; the third one is placed on top of the second, and so on, until the desired number is reached. To take the dishes off the table one by one, start with the last one placed on top; then move on to the last-but-one; then the one next to the top; and so on.

  • StringBuilder is a Java class that allows you to generate a mutable, or changeable, sequence of characters. The StringBuilder class, like StringBuffer, is an alternative to the Java Strings class, which provides an immutable sequence of characters. However, there is a critical distinction between StringBuffer and StringBuilder: the latter is non-synchronized.

  • The Scanner is a class in java.util package. This class is responsible for reading data from a string, the keyboard, a file, or a network socket. This article focuses solely on reading the keyboard input and displaying the output in a terminal window. Reading data from a file or a network channel is done similarly.

  • With the help of examples, you will learn how to utilize the switch statement in Java to regulate the flow of your program’s execution. The switch statement lets us choose several different ways to run a code block. The switch statement in Java has the following syntax:

  • The Math.random() method is one of Java’s most commonly used methods for generating a random numeric number. The java.lang class is a built-in class in Java.Math with several mathematical procedures, one of which is Math.random(). Because the Math.random() method is a static method, it can be invoked/called without first constructing a math class instance—the java.lang.Math class offers several methods for performing basic numeric operations such as the exponential, logarithm, square root, and trigonometric functions.

  • Changing the date format of a given Date or String is a typical Java programming task. For example, suppose you have “2022-05-22 12:00:00” and want to convert it to “2022-05-22,” or convert from dd-MM-YY to MM-dd-YY, or any other format you like, as long as it is a valid date format as defined by Java. How will you accomplish this? It’s not that difficult, after all. It’s a simple two-step procedure.

  • In Java, getting the current timestamp is simple. We’ll learn how to acquire the timestamp using the Date and Timestamp classes in this lesson. This article provides some Java examples for obtaining the current date, time, or timestamp. In addition, Java 8 has been included.