用簡單的Java代碼實現斐波那契數列__Java

import java.util.Scanner; public class Pro {        //----------輸入第幾項輸出對應該項的值-----------    public static void main(String [] args){        int f1 = 1,f2 =1, f = 0,n;        Scanner scanner = new Scanner (System.in);        n = scanner.nextInt();       //---------------------------       if (n==1||n==2){        System.out.println(1);        scanner.close();        }          //---------------------------      else     if(n>2&&n<100){         for (int i = 3;i<=n; i++){        f = f1 + f2;        f1 =f2;        f2 = f;          }         System.out.println(f);         scanner.close();        }        //----------------------------      else if(n>100){      System.out.println("輸入值過大。。");      scanner.close();}      //----------------------------      else       System.out.println("輸入值為負數。。");      scanner.close();         }    }