fibonocci number in java

The fibonacci sequence is a famous bit of mathematics, and it happens to have a recursive definition. The first two values in the sequence are 0 and 1 (essentially 2 base cases). Each subsequent value is the sum of the previous two values, so the whole sequence is: 0, 1, 1, 2, 3, 5, 8, 13, 21 and so on. Define a recursive fibonacci(n) method that returns the nth fibonacci number, with n=0 representing the start of the sequence.




fibonacci(0) → 0

fibonacci(1) → 1

fibonacci(2) → 1
public int fibonacci(int n) {


if(n==0)

return 0;

else if (n == 1)

return 1;

else if (n == 2)

return 1;

else

return fibonacci(n-1) + fibonacci(n-2);

}

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