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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