What Is Loop In Kotlin?

A for loop is

used for iterating over a sequence of values

. It executes a block of statements for each value in the sequence. Using Kotlin’s for loop, we can iterate over any Iterable such as a range, an array, or a collection.

How do you use loops in Kotlin?

1. fun main(args : Array<String>) {
2. val marks = arrayOf(80,85,60,90,70)
3. for(item in marks. indices)
4. println(“marks[$item]: “+ marks[item])
5. }

How do you use a loop in Kotlin?

1. fun main(args : Array<String>) {
2. val marks = arrayOf(80,85,60,90,70)
3. for(item in marks. indices)
4. println(“marks[$item]: “+ marks[item])
5. }

How do you use a loop?

A “For” Loop is

used to repeat a specific block of code a known number of times

. For example, if we want to check the grade of every student in the class, we loop from 1 to that number. When the number of times is not known before hand, we use a “While” loop.

How do you make a while loop in Kotlin?

1. /** * created by Chaitanya for Beginnersbook.com */ package beginnersbook fun main(args : Array<String>){ var num = 10 while(num>=5){ println(“Loop: $num”) num– } }
2. var num = 10 while(num>=5){ println(“Loop: $num”) num++ }
3. var num = 5 while(num<=10){ println(“Loop: $num”) num– }

Is keyword in Kotlin?

Type check is a way of checking the type( DataType ) or Class of a particular instance or variable while runtime to separate the flow for different objects. In few languages, it’s also denoted as Run Time Type Identification (RTTI) .

What language is Kotlin?

Kotlin is

an open-source statically typed programming language

that targets the JVM, Android, JavaScript and Native. It’s developed by JetBrains. The project started in 2010 and was open source from very early on. The first official 1.0 release was in February 2016.

How do I get the index in for each loop Kotlin?

1. val array = arrayOf(1, 3, 9)
2. for (item in array) {
3. //loops items.
4. }
5. for (index in 0.. array. size – 1) {
6. //loops all indices.
7. }
8. for (index in 0 untill array. size) {

How do I print Kotlin text?

To print a variable inside the print statement, we need to use the

dollar symbol($)

followed by the var/val name inside a double quoted string literal. To print the result of an expression we use ${ //expression goes here } . The output when the above code is run on the Kotlin Online Compiler is given below.

How do you break when Kotlin?

There are two types of break expression in Kotlin: As we all know,

Unlabelled break is used to terminate to

the closest enclosing loop when certain condition is satisfied. But labelled break is used to terminate to a desired loop when certain condition is satisfied. It can be done with the help of labels.

What is while loop example?

A “While” Loop is

used to repeat a specific block of code an unknown number of times

, until a condition is met. For example, if we want to ask a user for a number between 1 and 10, we don’t know how many times the user may enter a larger number, so we keep asking “while the number is not between 1 and 10”.

What is loop example?

A loop is

used for executing a block of statements repeatedly until a particular condition is satisfied

. For example, when you are displaying number from 1 to 100 you may want set the value of a variable to 1 and display it 100 times, increasing its value by 1 on each loop iteration.

Is while loop better than for loop?

In general, you should use a for loop when you know how many times the loop should run. If you want the loop to

break

based on a condition other than the number of times it runs, you should use a while loop.

How do you declare an array in Kotlin?

There are two ways to define an array in Kotlin. We can

use the library function arrayOf() to create an array

by passing the values of the elements to the function. Since Array is a class in Kotlin, we can also use the Array constructor to create an array.

How do you write if condition in Kotlin?

In Kotlin, if is an expression: it returns a value. Therefore, there

is no ternary operator

( condition ? then : else ) because ordinary if works fine in this role. If you’re using if as an expression, for example, for returning its value or assigning it to a variable, the else branch is mandatory.

What is a Kotlin Coroutine?

A coroutine is

a concurrency design pattern that you can use on Android to simplify code that executes asynchronously

. Coroutines were added to Kotlin in version 1.3 and are based on established concepts from other languages.