Philip Drach - 1 year ago 36

Java Question

Here is my code:

`public class EvenFibonacciNumbers {`

//0 1 1 2 3 5 8 13 21 34

public static void main(String args[]){

int index = 0;

while (true){

System.out.println(fibonacci(index));

index++;

}

}

public static long fibonacci(int i){ //i is our index value

//We will do this by recursion.

//We know that if our index is 0, it will return 0.

if(i == 0) return 0;

//We know that if our index is 1 or 2, it will return 1.

if (i <= 2) return 1;

//Now we need to determine what would happen if our index is greater

//than 2.

long fibTerm = fibonacci(i-1)+fibonacci(i-2);

return fibTerm;

}

}

What I think I have to do is change it to

`while (fibTerm<4000000)`

However, when I do this I get an error telling me that it cannot find the variable fibTerm. So, maybe this would be the wrong way to do this? I don't know exactly.

Answer

Add a local variable `fibterm`

to store the last result of your calculation, check if the result exceeds your limit `4000000`

and the print the result.

```
public static void main(String args[]){
int index = 0;
long fibterm = 0;
while ((fibterm = fibonacci(index++)) < 4000000){
System.out.println(fibterm);
}
}
```

Source (Stackoverflow)