以下是用Java实现的代码：

java
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import java.util.ArrayList;
import java.util.Scanner;

public class ToggleLights {

public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);
    System.out.print("请输入灯数和人数，以空格分隔：");
    int n = scanner.nextInt();
    int people = scanner.nextInt();
    String result = toggleLights(n, people);
    System.out.println("最后亮灯的编号：" + result);
    scanner.close();
}

public static String toggleLights(int n, int people) {
    boolean[] lights = new boolean[n]; // 初始化所有灯都是关闭的

    for (int person = 1; person <= people; person++) { // 依次表示每个人
        for (int lightIndex = person - 1; lightIndex < n; lightIndex += person) { // 对应当前人按下的开关
            lights[lightIndex] = !lights[lightIndex]; // 切换灯的状态
        }
    }

    ArrayList<Integer> result = new ArrayList<>();
    for (int i = 0; i < n; i++) {
        if (lights[i]) {
            result.add(i + 1); // 收集最后亮着的灯的编号
        }
    }

    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < result.size(); i++) {
        sb.append(result.get(i));
        if (i < result.size() - 1) {
            sb.append(", ");
        }
    }
    return sb.toString();
}

}
您可以将此代码保存到ToggleLights.java文件中，然后编译并运行。程序将提示您输入灯数和人数，然后输出最后亮着的灯的编号。