# fibonacci « Recursive « Java Class Q&A

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 Java Class Q&A » Recursive » fibonacci

### 1. How did this get 8?    stackoverflow.com

Here's the code:

``````class qual
{
public static int fibonacci(int n)
{
if (n == 0 || n ...``````

### 2. Tail call optimization for fibonacci function in java    stackoverflow.com

I was studying about Tail call recursion and came across some documentation that mentioned. Sun Java doesn't implement tail call optimization. I wrote following code to calculate fibonacci number in 3 ...

### 3. Recursive Fibonacci memorization    stackoverflow.com

I need some help with a program I'm writing for my programming 2 class. The question asks that one calculates the fibonacci sequence using recursion, one must store the calculated fibonacci ...

### 4. How does this implementation of Fibonacci(n) work? [recursion]    stackoverflow.com

Theres an exercise from a Java book I'm reading that has me confused:

A Fibonacci sequence is the sequence of numbers 1, 1, 2, 3, 5, 8, 13, 21, ...

### 5. Recursion of Fibonacci Numbers    coderanch.com

I have a question that I was curious if anyone could help me fill in the missing code, I have no idea how to go about finishing this up in order to have it completed... I need to take as input the values for k and n and output the nth member of the k-step sequence on a line by itself...for ...

### 6. Fibonacci Recursive    coderanch.com

I wrote this basic fibonacci recursive method, as a way of learning recursion. But compared to an older version of the same program this one runs much slower. Is this common with recursion? what could be causing this? class fibo { static int calculate(int one) { if(one == 1 || one == 0) { return one; } else { return calculate(one ...

### 10. run speed for large fibonacci numbers; Iterative vs Recursive    forums.oracle.com

Yes. Since 'result' is using "the 'work' in previous loop". Hence, the last stage of 'work' computation is useless. Some more, the value of 'work' is largest in the last stage. As BigInteger value grows larger, it requires more time to perform multiplication computation. Avoid the last stage of 'work' computation, can cut off half of the time.

### 11. Calculate Fibonacci recursively    forums.oracle.com

You are doing the recursive call correctly, but are not storing the result in you memo array. You also need to check whether you have stored the result, and if so, return that rather than calculating it. If you have stored values for 0 and 1, and your count is 2, then you need to check for n < count not ...

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