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Found 417 Articles for Kotlin
![AmitDiwan](https://www.tutorialspoint.com/assets/profiles/123055/profile/60_187394-1565938756.jpg)
420 Views
In this article, we will understand how to add two complex numbers in Kotlin. They have the ‘I’ that is, an imaginary part associated with it. Below is a demonstration of the same − Suppose our input is 15 +i24 and 3 +i7 The desired output would be 18 +i31 Algorithm Step 1 − Start Step 2 − Declare three Complex numbers: inputValue1, inputValue2 and myResult Step 3 − Hardcode the complex number values Step 4 − Define a function addComplexNumber, wherein you add the real numbers and the imaginary numbers separately and return the result. Step ... Read More
![AmitDiwan](https://www.tutorialspoint.com/assets/profiles/123055/profile/60_187394-1565938756.jpg)
2K+ Views
In this article, we will understand how to multiply two floating-point numbers. A floating-point number, is a positive or negative whole number with a decimal point. There are two types of floating point in Kotlin Float Double Below is a demonstration of the same − Suppose our input is val1: 10.5 val2: 45.0 The desired output would be The product is: 472.5 Algorithm Step 1 − Start Step 2 − Declare three floating points: val1, val2 and product Step 3 − Define the floating-point values Step 4 − Read the values Step 5 − Multiply ... Read More
![AmitDiwan](https://www.tutorialspoint.com/assets/profiles/123055/profile/60_187394-1565938756.jpg)
331 Views
In this article, we will understand how to read a number from standard input in Kotlin. The ‘nextInt’ method is used to read the number. Below is a demonstration of the same Suppose our input is 45 The desired output would be The input value is 45 Algorithm Step 1 − Start Step 2 − Declare an integer: value Step 3 − Define the integer Step 4 − Read the values Step 5 − Display the value Step 6 − Stop Example 1 In this example, we will read the number from the standard input using ... Read More
![AmitDiwan](https://www.tutorialspoint.com/assets/profiles/123055/profile/60_187394-1565938756.jpg)
853 Views
In this article, we will understand how to how to swap two numbers in Kotlin. This is done using a temporary variable. Below is a demonstration of the same Suppose our input is val1 : 45 val2 : 60 The desired output would be val1 : 60 val2 : 45 Algorithm Step 1 − Start Step 2 − Declare three integers: val1, val2 and tempVal Step 3 − Define the values Step 4 − Assign val1 to temporary variable Step 5 − Assign val2 to val1 Step 6 − Assign temporary tempVal variable to val2 Step 7 ... Read More
![AmitDiwan](https://www.tutorialspoint.com/assets/profiles/123055/profile/60_187394-1565938756.jpg)
4K+ Views
In this article, we will understand how to add two numbers. This can be done using the ‘+’ operator. Below is a demonstration of the same Suppose our input is input1 : 10 input2 : 15 The desired output would be Sum : 25 Algorithm Step 1 − Start Step 2 − Declare three integers: val1, val2 and sum Step 3 − Define the integers Step 4 − Add the two values using an addition operator (+) Step 5 − Display the result Step 6 − Stop Example 1 In this example, we will add two numbers ... Read More
![AmitDiwan](https://www.tutorialspoint.com/assets/profiles/123055/profile/60_187394-1565938756.jpg)
430 Views
In this article, we will understand how to print a string. String is a datatype that contains one or more characters and is enclosed in double quotes(“ ”). Below is a demonstration of the same Suppose our input is − Hello my name is John! The desired output would be The string is: Hello my name is John! Algorithm Step 1 − START Step 2 − Define a string variable Step 3 − Display the string on the console Step 4 − STOP Example 1 In this example, we will print a string using the print() ... Read More
![AmitDiwan](https://www.tutorialspoint.com/assets/profiles/123055/profile/60_187394-1565938756.jpg)
434 Views
In this article, we will understand how to print an integer. Integer is a primitive data type that contains numbers up to 32 bits. Below is a demonstration of the same − Suppose our input is − 45 The desired output would be − The integer is: 45 Algorithm Step 1 − START Step 2 − Define the integer value in a variable Step 3 − Display it on the console Step 4 − STOP Example 1 In this example, we will simply print an integer using the print() method. First, declare an integer variable, which ... Read More
![AmitDiwan](https://www.tutorialspoint.com/assets/profiles/123055/profile/60_187394-1565938756.jpg)
368 Views
In this article, we will understand how to print hello world in Kotlin. Hello world is stored as a string format and is printed using ‘print()’ function. Input Suppose our input is Hello World Output The expected out should be Hello World Algorithm Step 1 − START Step 2 − Define a string variable Step 3 − Display the string on the console Step 4 − STOP Example 1 In this example, we will simply display a string “Hello World” using the print() method in Kotlin − fun main() { val inputStr = ... Read More
![Soumak De](https://www.tutorialspoint.com/assets/profiles/390759/profile/60_3898744-1646125996.png)
4K+ Views
In this article, we will see how to find the number of repeated values in a Kotlin list.Example – Finding Repeated Values Using groupingBy()The Kotlin library provides an inline function called groupingBy() which creates a grouping source from an array to be used later with one of the group-and-fold operations using the specified keySelector function to extract a key from each element.The function declaration of groupingBy() looks like this −inline fun Array.groupingBy( crossinline keySelector: (T) -> K ): GroupingIn this example, we will create a list of values and implement groupingBy() in the list.fun main(args: Array) { ... Read More
![Soumak De](https://www.tutorialspoint.com/assets/profiles/390759/profile/60_3898744-1646125996.png)
1K+ Views
A Mutable List is an interface and generic collection of elements. Once a collection is declared as mutable, it becomes dynamic and we can modify its data as per requirement. A mutable list grows automatically in size as we insert new elements into it. The Mutable List inherits form the Generic class.Example – Creating a Mutable List in KotlinIn order to create a mutable list of repeating elements, we will be using Kotlin List(). By definition, it looks like this−inline fun List( size: Int, init: (index: Int) -> T ): ListAs we pass an initial default value, ... Read More