Kotlin Loops

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

In any programming, language loops are used to iterate over any data structure

until a certain condition is reached.

 

In Kotlin there are three types of loops.

 

1. for loop

         // iterating with for loop on an array
    var arr = arrayOf(1, 2, 3, 4, 5)
    for (i in arr) {
        println(i)
    }

    // iterating with for loop in a range
    for (i in 1..5) {
        println(i)
    }

    // iterating with for loop on a collection
    var list = listOf(1,2,3,"a", "b")
    for (item in list) {
        println(item)
    } 

 

2. while loop

         var num = 1
    while(num < 10) {
        println ("Number is $num")
        num++
    }

 

3. do-while loop

        var num = 1
    do {
         println ("Number is $num")
         num++
    } while(num < 10)