Question

* Write a Java program that calculates and displays the Fibonacci numbers
* First prompt the user to input a number, N
* Then use a for loop to calculate and display the first N fibonocci numbers
* For example, if the user enters 5, the output should be:
* 1, 1, 2, 3, 5
*
* if the user enters 10, the output should be:
* 1, 1, 2, 3, 5, 8, 13, 21, 34, 55

Answer 1

import java.util.*;
public class Main
{
    public static void main(String args[]) 
    { 
        Scanner s = new Scanner(System.in);
        int n;
        n=s.nextInt(); //Taking the input
        int first = 1, second = 1;  //Since first 2 terms are 1 and 1
        //For loop
        for(int i=0;i<n;i++){
            System.out.print(first + " "); 
            int temp = first + second; //next term in the sequence is sum of last two
            first = second;  //For next step 2nd term is first term 
            second = temp;   //For next step the next term is the second term
        }
    } 
}