Fibonacci数列（找规律）

 1 import java.util.Scanner;
 2 
 3 /**
 4  * 
 5  * Fibonacci 数列
 6  * @author Dell
 7  *
 8  */
 9 public class Main {
10 
11 static public int  n = 15;
12 static public int x = 0;
13 static public int y = 1;
14 static public int step;
15 static public void f() {
16     while(y<n) {
17         int i = y;
18         y = x+y;
19         x = i;
20     }
21     step = Math.min(Math.abs(x-n),Math.abs(y-n));
22 }
23 public static void main(String[] args) {
24     
25     Scanner sc =new Scanner(System.in);
26     n = Integer.parseInt(sc.nextLine().trim());
27     f();
28     System.out.println(step);
29 }
30 }