withIndex

Returns a lazy Iterable that wraps each element of the original array into an IndexedValue containing the index of that element and the element itself.

Returns a lazy Iterable that wraps each element of the original collection into an IndexedValue containing the index of that element and the element itself.

Returns an Iterator that wraps each element produced by the original iterator into an IndexedValue containing the index of that element and the element itself.

import java.util.*

fun main(args: Array<String>) {
//sampleStart
val iterator = ('a'..'c').iterator()

for ((index, value) in iterator.withIndex()) {
    println("The element at $index is $value")
}
//sampleEnd
}