递归yyds
class Solution {
public int getTranslationCount(String s) {
if (s.length() < 2) return 1;
int res = 1;
int sub = Integer.parseInt(s.substring(0,2));
res *= getTranslationCount(s.substring(1));
if (sub < 26 && sub > 9)
res += getTranslationCount(s.substring(2));
return res;
}
}