查找ArrayList中特定元素的所有索引(整数)

import java.util.ArrayList;

public class Main {
    public static void main(String[] args) {
        ArrayList<Integer> list = new ArrayList<>();
        list.add(1);
        list.add(2);
        list.add(3);
        list.add(2);
        list.add(4);
        list.add(2);

        int target = 2;
        ArrayList<Integer> indices = new ArrayList<>();

        for (int i = 0; i < list.size(); i++) {
            if (list.get(i) == target) {
                indices.add(i);
            }
        }

        System.out.println("Target element " + target + " found at indices: " + indices);
    }
}