int Search_Bin(SSTable ST, KeyType key) { int low=1; int high=ST.length; while(low<=high) { int mid=(low+high)/2; if(key==ST.elem[mid].key) return mid; else if(key<ST.elem[mid].key) high=mid-1; else low=mid+1; } return 0; }用中文画出代码程序框图

好的，以下是该程序的程序框图：

  +-------------------------------------------+
  |                                           |
  |              Search_Bin函数                |
  |                                           |
  +-------------------------------------------+
                   |
                   | 接收SSTable ST和KeyType key
                   |
                   V
  +-------------------------------------------+
  |                                           |
  |            初始化处理框(low=1)            |
  |                                           |
  +-------------------------------------------+
                   |
                   V
  +-------------------------------------------+
  |                                           |
  |        while循环处理框(low<=high)         |
  |                                           |
  +-------------------------------------------+
                   |
                   | 每轮循环执行以下处理框：
                   |
                   V
  +-------------------------------------------+
  |                                           |
  | 比较处理框(mid=(low+high)/2)              |
  |                                           |
  +-------------------------------------------+
                   |
                   V
  +-------------------------------------------+
  |                                           |
  |      如果key等于ST.elem[mid].key           |
  |      返回mid                              |
  |                                           |
  +-------------------------------------------+
                   |
                   | 否则，执行以下处理框之一：
                   |
                   V
  +-------------------------------------------+
  |                                           |
  | 如果key小于ST.elem[mid].key，则更新high=mid-1|
  |                                           |
  +-------------------------------------------+
                   |
                   V
  +-------------------------------------------+
  |                                           |
  | 如果key大于ST.elem[mid].key，则更新low=mid+1 |
  |                                           |
  +-------------------------------------------+
                   |
                   V
  +-------------------------------------------+
  |                                           |
  |      更新处理框(low或high的值已改变)      |
  |                                           |
  +-------------------------------------------+
                   |
                   V
  +-------------------------------------------+
  |                                           |
  |            返回处理框(return 0)            |
  |                                           |
  +-------------------------------------------+