java - 如何使生成按钮以随机顺序生成数组值？

Question

import java.util.Random;

public class Generator extends javax.swing.JFrame {

    String[] gamesL = new String[] {"Dota 2", "Garrys mod", "Dungeon Defenders"};

    Random rand = new Random();

    public Generator() {
        initComponents();
    }

private void initComponents() {...}

private void generateActionPerformed(java.awt.event.ActionEvent evt) {                                         
display.setText("You shall play " + gamesL[0]); 
}

Answer 1

使用Collections.shuffle（你的数组列表）来获得洗牌的随机数组；您需要导入 java.util.Collections。

Answer 2

这对（字符串）数组（与集合）进行排序

public void unsortStringArray(String[] a) {
    int len = a.length;
    for(int sourceIdx = 0; sourceIdx<len; sourceIdx++) {
        int destIdx = (int) Math.floor(Math.random() * len);
        String sx = a[destIdx];
        a[destIdx] = a[sourceIdx];
        a[sourceIdx] = sx;
    }
}