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To evaluate a Hermite series at points x, use the hermite.hermval() method in Python Numpy. The 1st parameter, x, if x is a list or tuple, it is converted to an ndarray, otherwise it is left unchanged and treated as a scalar. In either case, x or its elements must support addition and multiplication with themselves and with the elements of c.The 2nd parameter, C, an array of coefficients ordered so that the coefficients for terms of degree n are contained in c[n]. If c is multidimensional the remaining indices enumerate multiple polynomials. In the two dimensional case the coefficients ... Read More
To evaluate a Hermite series at points x, use the hermite.hermval() method in Python Numpy. The 1st parameter, x, if x is a list or tuple, it is converted to an ndarray, otherwise it is left unchanged and treated as a scalar. In either case, x or its elements must support addition and multiplication with themselves and with the elements of c.The 2nd parameter, C, an array of coefficients ordered so that the coefficients for terms of degree n are contained in c[n]. If c is multidimensional the remaining indices enumerate multiple polynomials. In the two dimensional case the coefficients ... Read More
To add one Hermite series to another, use the polynomial.hermite.hermadd() method in Python Numpy. The method returns an array representing the Hermite series of their sum. Returns the sum of two Hermite series c1 + c2. The arguments are sequences of coefficients ordered from lowest order term to highest, i.e., [1, 2, 3] represents the series P_0 + 2*P_1 + 3*P_2. The parameters c1 and c2 are 1-D arrays of Hermite series coefficients ordered from low to high.StepsAt first, import the required library −import numpy as np from numpy.polynomial import hermite as HCreate 1-D arrays of Hermite series coefficients −c1 ... Read More
In this article, we will take an example and show how to print all the elements of a String array in a single line using a Kotlin library class. In order to do that, we will use a String function called joinToString(), provided by the Kotlin library.As per the Kotlin documentation, the function definition looks like this −fun Array.joinToString( // the String will be separated by this separator: CharSequence = ", ", // This will be added as prefix to the String prefix: CharSequence = "", // This will be added as postfix ... Read More
A List is a collection where you can store same type of data in one place. There are two types of lists in Kotlin −An Immutable list is something that cannot be modified. It is read-only in nature.The other type of list is mutable which can be modified.In this article, we will see how to create a mutable list and how to add an item to the existing list.Example – Adding an Item to a Mutable ListIn order to add an item to a list, we will be using add() that is provided by the Kotlin library class.fun main(args: Array) ... Read More
Kotlin is a statistically typed language and it is based on Java, hence all the Java codes can easily be compiled within Kotlin. In this article, we will see how we can generate the current local date and time in Kotlin.As Kotlin is interoperable with Java, we will be using the Java utility class and Simple Date Format class in order to get the current local date and time.Example – Current Date and time using SimpleDateFormatimport java.text.SimpleDateFormat import java.util.* fun main(args: Array) { val simpleDate = SimpleDateFormat("dd/M/yyyy hh:mm:ss") val currentDate = simpleDate.format(Date()) println(" Current Date is: ... Read More
Kotlin is statistically typed language and it is built on JVM. Kotlin is cent percent comparable with Java. Hence, some of the Java functions can be used in Kotlin as well.In this article, we will take an example to demonstrate how we can use a Java class function convert an Int in Kotlin to its correponding Hex String.Example – Converting Int to Hex String in KotlinIn this example, we will use the Java class function toHexString().import java.lang.* fun main(args: Array) { val hexString = java.lang.Integer.toHexString(-66) println("Hex String for negative Number: " +hexString) val positiveNumber ... Read More
In this article, we will take a couple of examples to demonstrate how we can split a given String in Kotlin using some given delimiters.Example – Split a String using given delimitersIn this example, we will create a String and we will store some value in it and we will try to split the same using some delimiters.fun main(args: Array) { var str = "Tut@or@ia@lsPo@int.@com" var delimiter = "@" // It will split the given String using '@' val parts = str.split(delimiter) print(parts) }OutputIt will generate the following output −[Tut, or, ... Read More
Switch-case statement in any programming language allows the programmers to testify it against different values. It also provides an option to do something whenever the value of the variable does not match with a given value. In this article, we will take a simple example and demonstrate how we can implement the switch-case statement in Kotlin.Kotlin does not provide any option to write a switch-case statement. However, Kotlin provides an option to implement when() which works exactly the same way switch works in other programming languages.Example – Implementing switch-case in JavaIn this example, we will implement switch-case in Java.public class ... Read More
In this article, we will see three different ways to check whether a String is empty in Kotlin.Example – isEmpty()Kotlin library function isEmpty() can be used in order to check whether a String is empty. Note that it counts spaces too.fun main(args: Array) { // No space between the quotes val myString = "" // Space between the quotes val anotherString = " " println(myString.isEmpty()) // this will return false as we have a space println(anotherString.isEmpty()) }OutputOn execution, it will produce the following output −true falseObserve that the second ... Read More