Getting ready

The Kotlin standard library provides a convenient way of creating progression with a custom step value. We can do so using an extension function for progressions of integral types called step(). We can also benefit from the infix notation and declare a progression with a custom step, as follows:

val progression: IntProgression = 0..1000 step 100

If we were to use progression in the for loop, it would iterate 10 times:

val progression: IntProgression = 0..1000 step 100
for (i in progression) {
    println(i)
}

We could also achieve the same result by iterating with the while loop, as follows:

var i = 0
while (i <= 1000) {
    println(i)
    i += 100
}