Given a string s containing characters of English words representing digits from
Constraints:
s.length
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.
Given a string s containing characters of English words representing digits from
Constraints:
s.length
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.