give alphanumeric string s return second large numerical digit appear s 1 existan alphanumeric string string consist lowercase English letter digit Example 1input s dfa12321afdoutput 2explanation the digit appear s 1 2 3 the second large digit 2example 2input s abc1111output 1explanation the digit appear s 1 there second large digit Constraints1 slength 500s consist lowercase english letter andor digit