有可能用布尔值而不是列表来以这种方式进行洗牌吗



这里我的代码(在Eclipse上的Java中(显示了一个文件中的3张随机卡片。我正在尝试让一个洗牌按钮工作,并随机洗牌3张新卡。我用了";集合。洗牌(纸牌("并将我的布尔数组传递给它,但它说我不能,因为它想要一个List<gt;列表有没有可能让shuffle与我的布尔值一起工作,或者我必须使用List?

这是我的代码:

import java.util.Collections;
import java.util.List;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.HBox;
import javafx.stage.Stage;
public class DisplayCards extends Application {

HBox imageViews;

@Override
public void start(Stage primaryStage) throws Exception {
GridPane pane = new GridPane();
pane.setAlignment(Pos.CENTER);
boolean[] cards = new boolean[52];
int count = 0;
while(count <3) {
int card = (int)(Math.random() * 52);

if(!cards[card]) {
cards[card] = true;
pane.add(new ImageView(new Image("card/" + (card) + ".png")), count, 0);
count++;
}
}
imageViews = new HBox();
imageViews.setAlignment(Pos.CENTER);

shuffle();


Button btnShuffle = new Button("Shuffle");
btnShuffle.setOnAction(new EventHandler<ActionEvent>() {

public void handle(ActionEvent event) {
shuffle();

}
});

BorderPane Bpane = new BorderPane();
Bpane.setCenter(imageViews);
Bpane.setBottom(btnShuffle);

Scene scene = new Scene(pane, 250, 150);
primaryStage.setTitle("Display 4 Cards");
primaryStage.setScene(scene);
primaryStage.show();

}
private void shuffle() {
Collections.shuffle(cards);

}
public static void main(String[] args) {
launch(args);
}

}

您可以为数组实现Fisher–Yates shuffle。

private void shuffle(){
for(int i = cards.length - 1; i > 0; i--){
int j = java.util.concurrent.ThreadLocalRandom.current().nextInt(i + 1);
boolean temp = cards[i];
cards[i] = cards[j];
cards[j] = temp;
}
}

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