In this example I’m going to show you how to write a program to print Fibonacci series in Java.
The same Fibonacci programme is written in other languages such as C and JavaScript, search “fibonacci” in the search field to find those. Soon I will be writing in all other programming languages too.
If you already don’t have knowledge about Fibonacci, here is a simple explanation,
0, 1, 1, 2, 3, 5, 8…
0,1 -> 0 +1 =1 ( 1 is the next number)
0,1,2 -> 1+1 = 2 (2 is the next number)
0,1,2 -> 1+2 = 3
0,1,2,3 -> 2+3 = 5
So basically Fibonacci series is finding the next number by adding the previous two numbers.
Here is the Java Program to print Fibonacci series:
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 |
import java.util.*; public class fibonacci { public static void main(String[] args) { //define the variable int limit, next_num, first_num = 0, second_num = 1; Scanner in = new Scanner(System.in); System.out.print("Enter the limit: "); limit = in.nextInt(); //check the input if the value is greater than 0 if(limit > 0){ System.out.println(first_num); }else{ System.out.println("Value should be greater than 0"); } //check if input is 1 if(limit > 1){ System.out.println(second_num); } //if the input is > 2 then do then print fibonacci while(limit > 2) { //add the first value and second to get the next value next_num = first_num + second_num; //assign second value to first //next value to second //to find the next series first_num = second_num; second_num = next_num; //print the next value System.out.println(next_num); //decrement the limit by one limit--; } } } |
The output of the program will be:
Enter the limit: 6
0
1
1
2
3
5
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