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  1. import java.util.Scanner;
  2.  
  3.    class Fibonacci {
  4.  
  5.     public static int fibonacci(int n) {
  6.  
  7.         if (n <= 0) {
  8.             return 0; 
  9.         }
  10.         if (n == 1) {
  11.             return 1; 
  12.         }
  13.  
  14.         int f0 = 0; 
  15.         int f1 = 1; 
  16.         int fibo = 0; 
  17.  
  18.         for (int i = 0; i < n; i++) {
  19.             fibo = f0 + f1; 
  20.             f0 = f1;
  21.             f1 = fibo;
  22.         }
  23.  
  24.         return f0;
  25.     }
  26.  
  27.     public static void main(String[] args) {
  28.  
  29.         Scanner scanner = new Scanner(System.in);
  30.         System.out.print("Enter an integer n: ");
  31.         int n = scanner.nextInt();
  32.         scanner.close();
  33.  
  34.  
  35.         System.out.println("Output: " + fibonacci(n)); 
  36.     }
  37. }
Success #stdin #stdout 0.22s 58800KB
comments (?)
stdin 
7
stdout 
Enter an integer n: Output: 13
https://ideone.com/aWVNmo
language:
Java (HotSpot 12)
created:
5 days ago
visibility:
public

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