Kotlin: continue statement

continue statement skips the current iteration of loops(Ex: for, while, do-while loops). Just like break, continue also has two forms.

    1. unlabelled continue

    2. labelled continue

Unlabelled continue

    Syntax

        continue;

ContinueDemo.kt

fun main(args: Array<String>) {

 for (i in 1..10) {
  if (i % 2 != 0) {
   continue
  }
  print("$i ")
 }
}

Output

2 4 6 8 10

UnlabelledContinueInnerLoop.kt

fun main(args: Array<String>) {

 for (i in 1..5) {
  for(j in 1..10){
   if(j % 2 != 0){
    continue
   }
   print("$j ")
  }
  println()
 }
}

Output

2 4 6 8 10 
2 4 6 8 10 
2 4 6 8 10 
2 4 6 8 10 
2 4 6 8 10

Labelled Continue

Kotlin allows us to label any expression.

How to create a label?

Define an identifier followed by @ sign.

Ex:

outerLoop@, processState@

we can use continue statement with labels.

Syntax

continue@labelIdentifier

Ex

continue @outerLoop

continue @processState

ContinueLabelledDemo.kt

fun main(args: Array<String>) {

 outerLoop@ for (i in 1..5) {
  for (j in 1..10) {
   if (j > 5) {
    println()
    continue@outerLoop
   }
   print("$i ")
  }
 }
}

Output

1 1 1 1 1 
2 2 2 2 2 
3 3 3 3 3 
4 4 4 4 4 
5 5 5 5 5

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