public class Solution
extends Object
423 - Reconstruct Original Digits from English\.
Medium
Given a string `s` containing an out-of-order English representation of digits `0-9`, return _the digits in **ascending** order_.
**Example 1:**
**Input:** s = "owoztneoer"
**Output:** "012"
**Example 2:**
**Input:** s = "fviefuro"
**Output:** "45"
**Constraints:**
* 1 <= s.length <= 105
* `s[i]` is one of the characters `["e","g","f","i","h","o","n","s","r","u","t","w","v","x","z"]`.
* `s` is **guaranteed** to be valid.