第6周作业3-Fibonacci数列

import javax.swing.*;public class Fibonacci {public static void main(String[] args) { int n;  String s=(String)JOptionPane.showInputDialog(null,"请输入运行次数","Fibonacci数列",    JOptionPane.PLAIN_MESSAGE,null,null,null);    n=Integer.parseInt(s);{int i=1,j=1,k;int f=0;System.out.println("F("+1+")="+i);System.out.println("F("+2+")="+j);for(k=3;k<=n;k++){f=i+j;i=j;j=f;System.out.println("F("+k+")="+f);}}}}