RosettaCodeData/Task/Fibonacci-sequence/Java/fibonacci-sequence-4.java

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Java
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2013-04-10 21:29:02 -07:00
public static long fibTailRec(final int n)
{
return fibInner(0, 1, n);
}
private static long fibInner(final long a, final long b, final int n)
{
return n < 1 ? a : n == 1 ? b : fibInner(b, a + b, n - 1);
}