随机抽取的java代码 java随机抽样

Java随机抽取人名完整代码是什么？

public class test {\x0d\x0a public static void main(String[] args) {\x0d\x0a //定义人名数组\x0d\x0a String [] name = {"张三","李四","王五","八神庵","不知火舞","大蛇","景天","唐雪见","李逍遥","赵灵儿"};\x0d\x0a//随机生成数组下标、\x0d\x0a int num = (int)(Math.random() * 1000);\x0d\x0a//对生成随机抽取的java代码的随机数进行判断随机抽取的java代码，如果小于数组下标随机抽取的java代码，就跳出循环\x0d\x0awhile (numname.length-1) {\x0d\x0a if (num

回答于 2022-11-16

相关问答

Q1: java随机抽号程序

现在随机抽取的java代码的可以随机抽取的java代码了随机抽取的java代码，随机抽取的java代码你试下

import java.awt.BorderLayout;

import java.awt.Color;

import java.awt.Font;

import java.awt.GridLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.JTextField;

import javax.swing.SwingConstants;

public class RandomTest extends JFrame {

private static final long serialVersionUID = 6764423443555437772L;

boolean isStop = false;

private JLabel jl = new JLabel();

private JTextField jt = new JTextField();

private JButton start = new JButton("start");

private JButton stop = new JButton("stop");

private JPanel jp = new JPanel();

public RandomTest() {

this.jl.setHorizontalAlignment(SwingConstants.CENTER);

this.jl.setText("60"); // 设置随机数范围1到60

this.jl.setForeground(Color.red); // 设置字体颜色

this.jl.setFont(new Font("Dialog", 1, 24)); // 设置字体样式、大小

GridLayout layout = new GridLayout(1, 2);

this.add(jl, BorderLayout.NORTH);

this.add(jt, BorderLayout.CENTER);

this.jp.add(start, layout);

this.jp.add(stop, layout);

this.add(jp, BorderLayout.SOUTH);

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // 关闭窗口

start.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

isStop = false;

JTextThread jtt = new JTextThread(jt);

jtt.start();

}

});

stop.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

isStop = true;

}

});

}

public static void main(String[] args) {

RandomTest rt = new RandomTest();

rt.setSize(400, 300);

rt.setLocationRelativeTo(null); // 设置窗口初始位置随机抽取的java代码，屏幕中央

rt.setVisible(true);

}

class JTextThread extends Thread {

private JTextField jt;

public JTextThread(JTextField jt) {

this.jt = jt;

}

@Override

public void run() {

while (!isStop) {

try {

Thread.sleep(100);

int random = (int) (Math.random() * 60 + 1);

jt.setText(String.valueOf(random));

jt.setForeground(Color.blue); // 设置字体颜色

jt.setFont(new Font("Dialog", 1, 48)); // 设置字体样式、大小

jt.setHorizontalAlignment(SwingConstants.CENTER);

} catch (InterruptedException e) {

e.printStackTrace();

}

}

}

}

}

Q2: 请问用java从1-33个整数中随机抽取6个数字 且不重复 1-16随机抽取一个数，给小球？

完整代码为随机抽取的java代码：

public class Main {

public static void main(String[] args) {

int index = 1;

int[] redBalls = new int[6];

Random random = new Random();

boolean getMoreRed = true;

boolean getAgain;

System.out.println("开始抽取红球！");

while (getMoreRed) {

getAgain = false;

int red = random.nextInt(36) + 1;

System.out.print("本次抽取到随机抽取的java代码的红球为随机抽取的java代码：[" + red + "]！");

for (int i = 0; i index; i++) {

if (redBalls[i] == red) {

System.out.print("重复抽取随机抽取的java代码，将重新抽取红球");

getAgain = true;

break;

}

}

System.out.println("");

if (getAgain){

continue;

}

redBalls[index - 1] = red;

index++;

getMoreRed = index 7;

}

System.out.println("抽取到的红球为：");

Arrays.sort(redBalls);

for (int redBall : redBalls) {

System.out.print(redBall + " ");

}

System.out.println("\n\n开始抽取蓝球！");

System.out.println("本次抽取到的蓝球为：[" + (random.nextInt(16) + 1) + "]！");

}

}

运行结果：

普通抽取：

重复时抽取：

Q3: （java）题库中有20道题，随机抽10道不同的题出来 怎么写代码 在线等啊

import java.util.ArrayList;

import java.util.List;

public class Random {

    public static void main(String[] args) {

        String[] tiMu = new String[20];

        for (int i = 0; i  tiMu.length; i++) {

            tiMu[i] = "第" + (i + 1) + "题";

        }

        String[] temp = new String[10];

        //开始抽取题目

        //产生10个随机数

        ListInteger list = new ArrayListInteger();

        int i;

        while(list.size()  10){

            i = (int) (Math.random() * 20);

            if(!list.contains(i)){

                list.add(i);

            }

        }

        for (int j = 0; j  list.size(); j++) {

            temp[j] = tiMu[list.get(j)];

        }

        for (int iloop = 0; iloop  temp.length; iloop++) {

            System.out.print(temp[iloop] + "   ");

        }

    }

}

代码已经写完了，亲测可用，望采纳哦！

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