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What is Bouncy Number? In mathematical terms, a Bouncy number is a positive integer whose digits are neither in increasing nor in decreasing order. For example: 101, 102, 103, 104, 105, 106, 107, 108, 109, and 120 are the bouncy numbers, which digits does not follow any specific order. The bouncy number will always be unsorted, and there are no bouncy numbers between the range of 1 to 100 because numbers less than 100 can have only two digits that will be either increasing or decreasing order. Input & Output Scenarios The following input and output scenarios will implement the mathematical ... Read More
Yes, an Enum implements an Interface in Java. It can be useful when we need to implement business logic that is tightly coupled with a specific property of a given object or class. Before implementing the interface with an enum, let's discuss enums and interfaces in Java with a code snippet for better understanding. Enum in Java In Java, an Enum (i.e., an enumeration) is a special data type added in Java version 1.5. Enums are constants by default; the names of an enum type's fields are in uppercase letters. In the Java programming language, you can define an Enum ... Read More
This article will discuss the wait() and wait(long timeout) methods, along with a suitable example that explains when to call these methods in a thread in Java. The wait() Method In Java, the wait() method is used in multithreading and causes the current thread to "wait" until another thread calls notify() or notifyAll() on the same object. When the wait() method is called, the thread moves from the running to the waiting state and resumes only when notified, if not a deadlock will be formed. Note: Call the wait() method only when the thread should wait without any time limit. Following ... Read More
In Java, both deepToString() and asList() methods are static methods of the Arrays class. An array is an object that holds a fixed number of values of a similar type in a contiguous memory location. The deepToString() Method In Java, the deepToString() method is used to convert a multi-dimensional array into a string. It checks if any element in the array is also an array; it will convert that inner array to a string as well. Syntax Following is the syntax of the Arrays.deepToString() method: public static String deepToString(Object[] a) Here, a: An array ... Read More
The Character class is a subclass of Object class and it wraps a value of the primitive type char in an object. An object of type Character contains a single field whose type is char. We can check whether the given character in a string is a number/letter by - Using isDigit() method Using ASCII value comparison Using isDigit() Method To check whether a given character is a number or not, Java provides a method called isDigit(). This method is a static method of the Character class and determines whether ... Read More
In Python, using loops, we can execute a statement or a group of statements multiple times. Usually, the loop works for all the conditions, but there are certain scenarios where the functionality of loops is affected. In this article, we will understand those scenarios with examples. When sleep() method is used inside Loop The sleep() method is defined in the time module and used to suspend or stop the execution of the program for a specified number of seconds. When the sleep() method is placed inside a loop, it suspends the execution of each iteration for the given time. After ... Read More
A method in Java is a set of statements that can be reused in the program whenever we want. We can write a method once and call it multiple times. We can return values from a method; the datatype of the value we return is known as the return type. We return values from a Java method using a return statement. A return statement causes the program control to transfer back to the caller of a method. Every method in Java is declared with a return type, ... Read More
A Randomized Binary Search Tree (RBST) is a variation of a Binary Search Tree (BST) that contains randomization to maintain balance and improve efficiency. One common implementation of an RBST is a Treap, which combines BST properties with heap properties. Why We Use Random Binary Tree Random binary trees are used for analyzing the average-case complexity of data structure based on the binary trees. Features of RBST Following are the features of the randomized binary tree: BST Properties: The left subtree contains smaller value, right subtree contains larger value. Randomization: ... Read More
Self Balancing Binary Search tree A self-balancing binary search tree (BST) is a height-balanced binary search tree that automatically keeps its height (the maximum number of levels below the root) as small as possible when insertion and deletion operations are performed on the tree. In the self-balancing binary search tree, the height is maintained in the order of O(logn), so that all operations take O(logn) time on average. Common examples of self-balancing binary search trees are: AVL Tree RED Black Tree Splay Tree AVL Tree An ... Read More
In C++, operator precedence and associativity both work together to define the order of evaluation in an expression. Order precedence determines which operators need to be evaluated first according to precedence, whereas associativity defines the direction of operators to be evaluated of the same precedence. Operator precedence Operator precedence refers to the order of operations to be performed in expressions when multiple operators are present; here, operators with higher precedence (priority) are calculated first. For example: int x = 5 + 17 * 5; Here, according to operator precedence, multiplication has higher precedence than addition, therefore, it will first get ... Read More