例如,我有这样的声明:
my name is Joseph and my father's name is Brian
此语句按字分割,如下表所示:
------------------------------
| ID | word |
------------------------------
| 1 | my |
| 2 | name |
| 3 | is |
| 4 | Joseph |
| 5 | and |
| 6 | my |
| 7 | father's |
| 8 | name |
| 9 | is |
| 10 | Brian |
------------------------------
我想得到每个单词的上一个和下一个单词
例如,我想获得"name"的上一个和下一个单词:
--------------------------
| my | name | is | …