小编You*_*zie的帖子

这个程序适用于整数,但不是双打.没有错误,但程序返回-1.对不起,如果这是一个愚蠢的问题,但我是编程的新手.

public class binarySearchProject
{
  public static int binarySearch(double[] arr, double x, int high, int low)
  {
    int mid=(high+low)/2;
    if(high==low || low==mid || high==mid)
    {
      return -1;
    }
    if(arr[mid]>x)
    {
      return binarySearch(arr, x, high, mid);
    }
    else if(arr[mid]<x)
    {
      return binarySearch(arr, x, mid, low);
    }
    else if(arr[mid]==x)
    {
      return mid;
    }
    return -1;
  }
  public static void main(String args[])
  {
    double i = 45.3;
    double[] a = {-3, 10, 5, 24, 45.3, 10.5};
    int size = a.length;
    System.out.println(binarySearch(a, i, size, …

我的代码创建了一个基本的注册屏幕,但在JTextArea objTE1您选择文本的位置之前,它不会显示.

import java.awt.*;
import javax.swing.*;
public class SignUpScreen extends Frame
{
    SignUpScreen()
    {
        super("No Layout Manager");
        setLayout(null);
        setTitle("Sign Up");
        setSize(400,700);
        show();
    }
    public static void main(String[] args)
    {
        Frame objFrame;
        JTextArea objTE1;

        JCheckBox objCheckMail;
        JCheckBox objCheckEmail;
        JCheckBox objCheckPhone;

        Button objButtonFinish;
        Button objButtonCancel;

        TextField objEnterEmail;
        TextField objEnterAdress;
        TextField objEnterPhone;
        TextField objEnterUsername;
        TextField objEnterPassword;
        TextField objConfirmPassword;


        objFrame = new SignUpScreen();
        objTE1 = new JTextArea();
        objCheckMail = new JCheckBox("Mail Notifications");
        objCheckEmail = new JCheckBox("Email Notifications");
        objCheckPhone = new JCheckBox("Text Notifications"); …