Java program to print Fibonacci sequence

Friday, October 2nd, 2009

Write a Java program that uses both recursive and non-recursive functions to print nth value in the Fibonacci sequence

Without recursion:

import java.util.Scanner;
class fibonacci
{
	public static void main(String[] input)
	{
		int x,y;
		x=Integer.parseInt(input[0]);
		y=Integer.parseInt(input[1]);
		Scanner s=new Scanner(System.in);
		System.out.println(“Enter the value of n:”);
int n=s.nextInt();
		int z[]=new int[n];
		z[0]=x;
		z[1]=y;
		for(int i=2;i<n;i++)
		{
			z[i]=z[i-1]+z[i-2];
		}
		for(int i=0;i<n;i++)
		{	
			System.out.println(z[i]);
		}
	}
}

With recursion:

import java.util.Scanner;
class fibonacci
{
	public static void main(String[] args)
	{
		Scanner s=new Scanner(System.in);
		System.out.println(“Enter the value of n:”);
		int n=s.nextInt();
		fiboni f1=new fiboni();
		System.out.println(f1.fibon(n));
	}
}
class fiboni
{
	public int fibon(int a)
	{
		if(a==0 || a==1)
			return 1;
		else
			return fibon(a-1)+fibon(a-2);
	}
}

Output:

1
1
2
3
5
8
13
21
34
55

Author Name :
Ranjith

Total : 5 Comments

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5 Responses to “Java program to print Fibonacci sequence”

jenita says:

March 28, 2011 at 7:29 pm

wow…. i dnt knw wat to say….!!! but u didnt hav any comment abut ur program dat’s y i am publishin a comment…
….i really cant understand ur programs coz u hav sum kind of thing wich is not in my syllabus…..

anyway i appreciate u 4 takin effort to publish …
kami says:

April 13, 2012 at 12:05 pm

will the above mentioned quote executes
prabin says:

September 20, 2012 at 10:58 am

011234………….15th term
arindam says:

December 2, 2012 at 3:31 am

Your code snippet is not right it’s printing your output only no matter what I take as input. but thanks neway for your code snippet.
arindam says:

December 2, 2012 at 3:37 am

sorry I had some mistakes in my code that’s why your program didn’t execute properly.