stringinsert2语法解释

The syntax for the string.insert() method is:

string.insert(index, value)

• "string" refers to the string that you want to insert a value into.
• "index" refers to the position where you want to insert the value.
• "value" refers to the value that you want to insert into the string.

In the example provided, the statement "string.insert(2, ",")" would insert a comma (",") at the 2nd position of the string.