13_roman to Integer

Given a Roman numeral, convert it to an integer.

Input is guaranteed to being within the range from 1 to 3999.

Conversion of Roman numerals to Arabic numerals

I 1

X 10

C 100

M 1000

V 5

L 50

D 500

Small numbers in front of large numbers, minus small numbers for large numbers, and small numbers for large numbers after large numbers

 Public classSolution { Public intRomantoint (strings) {intresult =0; Char[] Chlist =S.tochararray (); Dictionary<Char,int> romadic =Newdictionary<Char,int>(); Romadic.add ('I',1); Romadic.add ('X',Ten); Romadic.add ('C', -); Romadic.add ('M', +); Romadic.add ('V',5); Romadic.add ('L', -); Romadic.add ('D', -); intFormer, latter =0;  for(inti =0; I < chlist.length-1; i++) {Former=0; Latter=0; Romadic.trygetvalue (Chlist[i], outformer); Romadic.trygetvalue (Chlist[i+1], outlatter); if(Former <latter) {Result-=former; }                Else{result+=former; }            }                        intLast =0; Romadic.trygetvalue (Chlist.last (), outLast ); Result+=Last ; returnresult; }}

13_roman to Integer