Kotlin Ranges

You can create a range in Kotlin via .. operator.
Syntax:

i..j

It will create a range i to j including both i and j.

Let us see an example of range in Kotlin.

fun main(args: Array<String>)
{
	for(i in 1..5)
	{
		print(i)
	}
}

Output:
12345

Using downTo function we can go reverse in a range.
Example:

fun main(args: Array<String>)
{
	for(i in 5 downTo 1)
	{
		print(i)
	}
}

Output:
54321

Using step function we can increase the step count.
Example:

fun main(args: Array<String>)
{
	for (i in 1..10 step 2)
	{
		print(i)
	}
}

Above example prints odd numbers:

Output:
13579

What if we want to exclude the last value in a range?
For such scenarios, we can use until.
Example:

fun main(args: Array<String>)
{
	for (i in 1 until 5)
	{
		print(i)
	}
}

Output:
1234