Created
June 25, 2019 08:43
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nth fibonacci number
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| // find nth fibonacci number | |
| def fib(n: Int): Int = { | |
| @annotation.tailrec | |
| def loop(a: Int, b: Int, acc: Int): Int = | |
| if (acc > 0) loop(b, a + b, acc - 1) | |
| else b | |
| if (n < 1) throw new Exception(s"Can't find ${n}th term") | |
| else if(n == 1) 0 | |
| else if (n == 2) 1 | |
| else loop(0, 1, n - 2) | |
| } | |
| println(fib(40)) |
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