Deepak Prasad

The Tree is a non linear data structure consisting of nodes and edges. Depending upon the type of tree, it can have 0 or more child nodes. There are two ways to calculate the height of a tree using Recursive Approach or …

In this tutorial, we covered four different approaches to convert char to int in Java, Using ASCII Values, Integer.parseInt() method, Character.getNumericValue() method and Subtracting '0'

In order to get sublist either in an ArrayList or LinkedList, we have to use the sublist() method which is a method of AbstractList class.

In this tutorial we will cover multiple examples to understand how to split string into array for different scenarios

There are three different ways to return an array from a function in Java as listed below: Return an array of primitive type, Return an array of objects, Return a multidimensional array

There are several ways to convert the set to list in java as listed below. Using looping, ArrayList Constructor, LinkedList Constructor, List.addAll() Method, List.copyOf() method, stream API, Apache Commons Collections

There are five ways to convert a String to Date in java as listed below. Using SimpleDateFormat Class, LocalDate Class, DateTimeFormater Class, Instant Class, Apache Commons Lang - DateUtils

There are several ways to compare characters in java as listed below, Using Relational Operators, Using Character.compare(), Using Character.hashCode(), Using compareTo() method, Using equals() method, Using charValue() …

In this tutorial we cover following 6 different methods to implement hashing in java. Using Hashtable Class, HashMap Class, LinkedHashMap Class, ConcurrentHashMap Class, HashSet Class and LinkedHashSet Class

The list below shows five different ways in which we can copy a file in Java. Using FileInputStream and FileOutputStream Using Paths and Files Using RandomAccessFile Class Using FileChannel Using Files.copy()

In Java, there are three different ways to check if file exists or not such as Using exists method of Legacy I/O File class, Using isFile method of File class, Using exists method of NIO File class

The list below shows eight different ways to get current date in Java Using java.util.Date, java.util.Calendar, java.time.LocalDateTime, java.time.LocalDate, java.time.Year, java.time.MonthDay, java.time.OffsetDateTime, …

We can reverse a list in Java using four different ways i.e. Using add and remove method, Using recursion, Using reverse method of Collections, Using ListIterator Interface

We can use any of the five shown approaches as per the program requirement to return multiple values in Java. Return an array of specific type or object, Return using the Pair class of util package, Return a String …

There are multiple ways in Linux to rename single or multiple files using one line commands or in script

In this tutorial we learned how to check if path is subdirectory of another directory using Node.JS. Tutorial on NodeJS Path module.

Step by Step instructions to configure local and offline yum or dnf repository server using Nginx on Rocky Linux 8

In this article, you learned how you can use the Node.Js forEach() to iterate over an iterable in JavaScript. When iterating over array elements, you should opt for forEach() whereas using map() and reduce() would work …

Kubernetes Ingress provides a granular mechanism for routing requests into a cluster. Ingress does not replace Services but augments them with capabilities such as path-based routing.

There are three ways to detect a loop in a linked list cycle. They are as listed below. Traversing through the list, Using HashSet, Using Floyd's Cycle Detection Algorithm

The pandas.Series.map() performs the mapping by first matching the values of the outer Series with the index labels of the inner Series. It then returns a new Series, with the index labels of the outer Series but the …

Step by Step instructions to set up Java with Visual Studio Code. Create and compile your first Java Program using VSC.

Step by step instructions to set up Java with Eclipse IDE. create your first Java program using Eclipse and execute the same.

The purpose of the assert module in Node.js is to provide various ways of asserting functions. For instance, if the assertion. It is used to test the functionality of functions in Node.js.

In this tutorial we explain usage of pandas resample using multiple methods and examples. Frequency conversion provides basic conversion of data using the new frequency intervals and allows the filling of missing data …

In this tutorial we learned to create histogram in Pandas with following parameters, with specific size, with number of bins, Histogram with specific color, with figsize

unique() function is used to get the distinct / unique data from Series/DataFrames. It can be applied on the columns in the dataframe. The unique() method returns a NumPy ndarray of unique values from the Series

Pandas rolling() function is used to provide the window calculations for the given pandas object. By using rolling we can calculate statistical operations like mean(), min() , max() and sum() on the rolling window.

Pandas melt() function is used to unpivot a DataFrame from wide to long format, optionally leaving identifiers set. A pivot table aggregates the values in a data set.

In this tutorial we will cover following methods to read JSOn file in NodeJS; Using fs module, require function and third party NPM libraries such as jsonfile and bfj