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Calculate Fibonacci numbers in Swift
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| // https://en.wikipedia.org/wiki/Fibonacci_number | |
| // 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55 ... | |
| func fib(n:Int)->Int { | |
| if n > 2 { | |
| return fib(n-1) + fib(n-2) | |
| } else { | |
| return n | |
| } | |
| } | |
| //usage | |
| fib(0) |
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