java - java中如何比较两个ArrayList

Question

我正在制作 Lotto 程序。

我如何知道一个 ArrayList 是否包含另一个 ArrayList 中的所有数字？

我尝试过的方式。

ArrayList<String> newNumbers = new ArrayList<>();//Define Lotto Scope
ArrayList<String> resultNumbers = new ArrayList<>(); //Only 6 numbers 
ArrayList<String> includingNumbers= new ArrayList<>(); //Number to Include

 public void applyStaticNumbers(){

   for (int i = 1; i < 46; i++) {
        newNumbers.add("" + i);
    }

   Collections.shuffle(newNumbers);

    for (int i = 0; i < 6; i++) {
        resultNumbers.add(newNumbers.get(i));
    }

   resultNumbers.sort(Comparator.comparing(Double::parseDouble)); //sort Numbers

   if (resultNumbers.contains(includingNumbers.get(0))) {
        for (int i = 0; i < 6; i++) {
            textViews.get(i).setText(resultNumbers.get(i));
        }
    } else {//If not included, restart.
        newNumbers.clear();
        resultNumbers.clear();
        applyStaticNumbers();
    }


}

Answer 1

你可以使用containsAll方法

includingNumbers.containsAll(resultNumbers)