423. Reconstruct Original Digits from English 
¶
Problem
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 <= 105s[i]is one of the characters["e","g","f","i","h","o","n","s","r","u","t","w","v","x","z"].sis guaranteed to be valid.