| /* |
| * Copyright 2015-2022 the original author or authors. |
| * |
| * All rights reserved. This program and the accompanying materials are |
| * made available under the terms of the Eclipse Public License v2.0 which |
| * accompanies this distribution and is available at |
| * |
| * https://www.eclipse.org/legal/epl-v20.html |
| */ |
| package example |
| |
| class FibonacciCalculator { |
| |
| private val fibonacci = sequence { |
| yield(0) // 0th Fibonacci number |
| yield(1) // first Fibonacci number |
| var cur = 1 |
| var next = 1 |
| while (true) { |
| yield(next) // next Fibonacci number |
| val tmp = cur + next |
| cur = next |
| next = tmp |
| } |
| } |
| |
| fun fib(fibonacciNumber: Int) = |
| fibonacci.elementAt(fibonacciNumber) |
| } |
