高效率查询树形菜单

import java.util.*;
public class TreeMenu {
   
   
    public static void main(String[] args) {
   
   
        // 构造测试数据
        List<Menu> menuList = new ArrayList<>();
        menuList.add(new Menu(1, "菜单1", 0));
        menuList.add(new Menu(2, "菜单2", 0));
        menuList.add(new Menu(3, "菜单1-1", 1));
        menuList.add(new Menu(4, "菜单1-2", 1));
        menuList.add(new