30:00
Given two strings s and t, determine if they are isomorphic. Two strings are isomorphic if the characters in s can be replaced to get t.
1≤s.length≤5×1041 \leq s.\text{length} \leq 5 \times 10^41≤s.length≤5×104
t.length==s.lengtht.\text{length} == s.\text{length}t.length==s.length
s and t consist of any valid ASCII characters.
s
t
Check isomorphic