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Kotlin For loop

In Kotlin, The for loop iterates through anything that provides an iterator. This is equivalent to the foreach loop in languages like C#. and foreach/for in Java. For loop in Kotlin can be used in many different ways with steps and other traverse direction like downTo .

Kotlin For loop syntax

for (item: Int in ints) {
    // ...
}


Example Kotlin For loop

fun main() {
  for (i in 1..3) {
      println(i)
  }
}

Output

1
2
3


Example Kotlin For loop With Array

fun main() {
  val fruits = arrayOf("Orange", "Apple", "Banana")
  for (fruit in fruits) {
    println(fruit)
  }
}

Output

Orange
Apple
Banana


Example Kotlin For loop With Steps and down

In Kotlin you can loop using step and downTo

fun main() {
  for (i in 6 downTo 0 step 2) {
      println(i)
  }
}

Output

6
4
2
0




Conclusion

In this page (written and validated by ) you learned about Kotlin For loop . What's Next? If you are interested in completing Kotlin tutorial, your next topic will be learning about: Kotlin Loop Break and Continue.



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