## 385. Mini Parser

Given a nested list of integers represented as a string, implement a parser to deserialize it.

Each element is either an integer, or a list -- whose elements may also be integers or other lists.

Note: You may assume that the string is well-formed:

• String is non-empty.
• String does not contain white spaces.
• String contains only digits `0-9`, `[`, `-` `,`, `]`.

Example 1:

```Given s = "324",

You should return a NestedInteger object which contains a single integer 324.
```

Example 2:

```Given s = "[123,[456,[789]]]",

Return a NestedInteger object containing a nested list with 2 elements:

1. An integer containing value 123.
2. A nested list containing two elements:
i.  An integer containing value 456.
ii. A nested list with one element:
a. An integer containing value 789.
```

## Rust Solution

``````struct Solution;
use rustgym_util::*;

impl Solution {
fn deserialize(s: String) -> NestedInteger {
nested_integer!(s)
}
}

#[test]
fn test() {
let s = "324".to_string();
let res = nested_integer!("324");
assert_eq!(Solution::deserialize(s), res);
let s = "[123,[456,[789]]]".to_string();
let res = nested_integer!("[123,[456,[789]]]");
assert_eq!(Solution::deserialize(s), res);
let s = "[123,456,[788,799,833],[[]],10,[]]".to_string();
let res = nested_integer!("[123,456,[788,799,833],[[]],10,[]]");
assert_eq!(Solution::deserialize(s), res);
}
``````

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