Fibonacci in Kotlin

Published on 18 October 2018 (Updated: 18 October 2018)

Welcome to the Fibonacci in Kotlin page! Here, you'll find the source code for this program as well as a description of how the program works.

Current Solution

import kotlin.system.exitProcess

// First arg is number of iterations to run
fun main(args: Array<String>) {
    if (args.isNullOrEmpty() || args[0].toIntOrNull()?.takeIf { it >= 0 } == null) {
        println("Usage: please input the count of fibonacci numbers to output")

    val iterations = args[0].toInt()

    var j: Int
    var k = 0
    var l = 1

    for (i in 1..iterations) {
        println("$i: $l")

        j = k
        k = l
        l = j + k

Fibonacci in Kotlin was written by:

If you see anything you'd like to change or update, please consider contributing.

Note: The solution shown above is the current solution in the Sample Programs repository as of Oct 09 2020 23:34:00. The solution was first committed on Oct 18 2018 14:52:56. As a result, documentation below may be outdated.

How to Implement the Solution

No 'How to Implement the Solution' section available. Please consider contributing.

How to Run the Solution

No 'How to Run the Solution' section available. Please consider contributing.