我正在编写一个GUI程序,该程序将允许用户输入数字n,然后从该位置开始计算数字序列中的第n个项。他们可以选择使用迭代或递归方法。最后,当用户关闭窗口时,它应该创建一个新的文本文档,该文档具有第n个术语,迭代方法的效率以及前十个术语的每行的递归方法的效率。
我遇到的麻烦是效率计数器。使用任何一种方法都应该返回效率,但是在更改值或切换方法后单击计算按钮时,它会不断添加到效率计数器中,而不是进行重置。我知道这是因为我的效率变量是静态的,但是我的教授要求我的方法也必须是静态的。我应该如何解决这个问题?
这是我的GUI文件
//Matt Edwards
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.*;
import java.util.*;
public class recursiveGUI extends JPanel
{
int counterEfficiency;
private JFrame frame;//The frame
private JPanel panel;//The panel
private JRadioButton iterative;
private JRadioButton recursive;
private JLabel enter;
private JTextField enter2;
private JButton compute;
private JLabel result;
private JTextField result2;
private JLabel efficiency;
private JTextField efficiency2;
private ButtonGroup radioButtons;
public recursiveGUI()
{
frame=new JFrame("Project 3");
panel=new JPanel();
iterative=new JRadioButton("Iterative");
recursive=new JRadioButton("Recursive");
enter=new JLabel("Enter n");
enter2=new JTextField("");
compute=new JButton("Compute");
result=new JLabel("Results");
result2=new JTextField("");
efficiency=new JLabel("Efficiency");
efficiency2=new JTextField("");
radioButtons=new ButtonGroup();
//frame.addWindowListener(new WindowAdapter(){
// public void windowClosed(WindowEvent e){
// PrintWriter outFile=new PrintWriter(new File("efficienctResults.txt"));
//for(int n=0;n<=10;n++)
//{
// outFile.println(n+","+));
//}
//}
//}
compute.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
int n;
if(iterative.isSelected())
{
String input=enter2.getText();
n=Integer.parseInt(input);
result2.setText(Integer.toString(Sequence.computeIterative(n)));
efficiency2.setText(Integer.toString(Sequence.getEfficiency()));
}
else if(recursive.isSelected())
{
String input=enter2.getText();
n=Integer.parseInt(input);
result2.setText(Integer.toString(Sequence.computeRecursive(n)));
efficiency2.setText(Integer.toString(Sequence.getEfficiency()));
}
}
});
//Adding the parts together
panel.setLayout(new GridLayout(6,2));
radioButtons.add(iterative);
radioButtons.add(recursive);
panel.add(new JLabel());panel.add(iterative);
panel.add(new JLabel());panel.add(recursive);
panel.add(enter);panel.add(enter2);
panel.add(new JLabel());panel.add(compute);
panel.add(result);panel.add(result2);
panel.add(efficiency);panel.add(efficiency2);
frame.add(panel);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setSize(600,300);
frame.setBackground(Color.red);
frame.setVisible(true);
}
//Main method
public static void main(String[] args)
{
recursiveGUI myGUI=new recursiveGUI();
}
}
这是我的方法的文件
public class Sequence
{
static int efficiency;
public static int computeIterative(int n)
{
int result = 0;
if(n==0)
{
result=0;
}
else if(n==1)
{
result=1;
}
else
{
int first=1;
int second=0;
for(int i=2;i<=n;i++)
{
efficiency++;
result=2*second+first;
second=first;
first=result;
}
}
return result;
}
public static int computeRecursive(int n)
{
int result=0;
efficiency++;
if(n==0)
{
result=0;
}
else if(n==1)
{
result=1;
}
else
{
result=2*computeRecursive(n-1)+computeRecursive(n-2);
}
return result;
}
public static int getEfficiency()
{
return efficiency;
}
public static void main(String[] args)
{
computeIterative(5);
}
}
最佳答案
您可以在获取效率之前简单地重置效率,如下所示:
public static int getEfficiency()
{
int result = efficiency;
efficiency = 0;
return result;
}
关于java - 效率计数器不会重置,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/40965119/