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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.

class Solution { public String originalDigits(String s) { } }