0423. Reconstruct Original Digits from English

https://leetcode.com/problems/reconstruct-original-digits-from-english

Description

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.

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