Given a string s represents the serialization of a nested list, implement a parser to deserialize it and return the deserialized
NestedInteger.Each element is either an integer or a list whose elements may also be integers or other lists.
Example 1:
Example 2:
Constraints:
1 <= s.length <= 5 * 104
sconsists of digits, square brackets"[]", negative sign'-', and commas','.
sis the serialization of validNestedInteger.
- 每个NestedInteger对应一对"[]",每次读取到","即当前已经确定一个元素，最后这里会有个定义只要[]括起来的部分都算NestedInteger#list类型，就算里面只扩了一个数字