给你一个数组 orders，表示客户在餐厅中完成的订单，确切地说， orders[i]=[customerNamei,tableNumberi,foodItemi] ，其中 customerNamei 是客户的姓名，tableNumberi 是客户所在餐桌的桌号，而 foodItemi 是客户点的餐品名称。
    请你返回该餐厅的 点菜展示表 。在这张表中，表中第一行为标题，其第一列为餐桌桌号 “Table” ，后面每一列都是按字母顺序排列的餐品名称。接下来每一行中的项则表示每张餐桌订购的相应餐品数量，第一列应当填对应的桌号，后面依次填写下单的餐品数量。
    注意：客户姓名不是点菜展示表的一部分。此外，表中的数据行应该按餐桌桌号升序排列。

    示例 1：

    1. 输入：orders = [["David","3","Ceviche"],["Corina","10","Beef Burrito"],["David","3","Fried Chicken"],["Carla","5","Water"],["Carla","5","Ceviche"],["Rous","3","Ceviche"]]
    2. 输出：[["Table","Beef Burrito","Ceviche","Fried Chicken","Water"],["3","0","2","1","0"],["5","0","1","0","1"],["10","1","0","0","0"]] 
    3. 解释：
    4. 点菜展示表如下所示：
    5. Table,Beef Burrito,Ceviche,Fried Chicken,Water
    6. 3    ,0           ,2      ,1            ,0
    7. 5    ,0           ,1      ,0            ,1
    8. 10   ,1           ,0      ,0            ,0
    9. 对于餐桌 3：David 点了 "Ceviche" 和 "Fried Chicken"，而 Rous 点了 "Ceviche"
    10. 而餐桌 5：Carla 点了 "Water" 和 "Ceviche"
    11. 餐桌 10：Corina 点了 "Beef Burrito"

    示例 2：

    输入：orders = [["James","12","Fried Chicken"],["Ratesh","12","Fried Chicken"],["Amadeus","12","Fried Chicken"],["Adam","1","Canadian Waffles"],["Brianna","1","Canadian Waffles"]]
输出：[["Table","Canadian Waffles","Fried Chicken"],["1","2","0"],["12","0","3"]] 
解释：
对于餐桌 1：Adam 和 Brianna 都点了 "Canadian Waffles"
而餐桌 12：James, Ratesh 和 Amadeus 都点了 "Fried Chicken"

    示例 3：

    输入：orders = [["Laura","2","Bean Burrito"],["Jhon","2","Beef Burrito"],["Melissa","2","Soda"]]
输出：[["Table","Bean Burrito","Beef Burrito","Soda"],["2","1","1","1"]]


    提示：

    • 1 <= orders.length <= 5 * 10^4
    • orders[i].length == 3
    • 1 <= customerNamei.length, foodItemi.length <= 20
    • customerNamei 和 foodItemi 由大小写英文字母及空格字符 ' ' 组成。

    • tableNumberi 是 1 到 500 范围内的整数。

      func displayTable(orders [][]string) [][]string {
  res := [][]string{}
  foodSet := map[string]bool{}
  // 桌号，菜品，数量
  tableList := map[int]map[string]int{}

  // [客户，桌号，菜品]
  for _, order := range orders {
      // 去重
      foodSet[order[2]] = true
      id,_ := strconv.Atoi(order[1])
      if tableList[id] == nil {
          tableList[id] = map[string]int{}
      }
      tableList[id][order[2]]++
  }

  // 菜品 提取 排序
  foods := make([]string, 0, len(foodSet))
  for food := range foodSet {
      foods = append(foods, food)
  }
  sort.Strings(foods)

  // 桌号 提取 排序
  ids := make([]int, 0 ,len(tableList))
  for id := range tableList {
      ids = append(ids, id)
  }
  sort.Ints(ids)

  head := []string{"Table"}
  head = append(head, foods...)

  res = append(res, head)

  for _, id := range ids {
      // 每一层
      layer := []string{strconv.Itoa(id)}
      for _, food := range foods {
          layer = append(layer, strconv.Itoa(tableList[id][food]))
      }
      res = append(res, layer)
  }
  return res
}