如何从数组中将字符串随机输出到多个标签而不重复

Question

我想做一个篮球季后赛模拟器。我有一个东区队和西区队的阵容。我想随机将团队名称输出到每侧的前4个标签上，不重复。如何为每个团队生成随机的唯一种子。

private void btnSeedActionPerformed(java.awt.event.ActionEvent evt) {                                        
        
        lblSeriesWins.setText(String.valueOf("0"));
        
        String TeamName = (String)jComboBox1.getSelectedItem();
        
        String Raptors = "Raptors";
        String Bucks = "Bucks";
        String Phila = "76ers";
        String Celtics = "Celtics";
        
        String [ ] eastTeams = {"Raptors","Bucks", "76ers", "Celtics"};
        Random random1 = new Random();
        int PickEast = random1.nextInt(eastTeams.length);
        
        lblFirstTeamEast.setText(String.valueOf(eastTeams[PickEast]));
        lblSecondTeamEast.setText(String.valueOf(eastTeams[PickEast])); 
        lblThirdTeamEast.setText(String.valueOf(eastTeams[PickEast]));
        lblFourthTeamEast.setText(String.valueOf(eastTeams[PickEast]));
        
        String[ ] westTeams = {"Lakers", "Warriors", "Suns", "Grizzlies"};
        Random random2 = new Random();
        int PickWest = random2.nextInt(westTeams.length);
        
        lblFirstTeamWest.setText(String.valueOf(westTeams[PickWest]));
        lblSecondTeamWest.setText(String.valueOf(westTeams[PickWest]));
        lblThirdTeamWest.setText(String.valueOf(westTeams[PickWest]));
        lblFourthTeamWest.setText(String.valueOf(westTeams[PickWest]));

Answer 1

你可以把名字放在一个列表中，然后打乱列表，给你一个没有重复的随机顺序：

List<String> eastTeams = new ArrayList<>(List.of("Raptors", "Bucks", "76ers", "Celtics"));
Collections.shuffle(eastTeams);

lblFirstTeamEast.setText(eastTeams.get(0));
lblSecondTeamEast.setText(eastTeams.get(1)); 
lblThirdTeamEast.setText(eastTeams.get(2));
lblFourthTeamEast.setText(eastTeams.get(3));