Nyotron Information Security interview question

Programming question : Rome to Number function implementation input : number , output string of ( M = 1000 , L = 900 ......(cant remember) ..... 4 , I = 1) so MM = 2000 ML = 1900 you have two arrays 1. { 1000 , 900 , 500 ... 4 , 1 } 2. { M , L , .... I } array's are synced... ( corresponding place ).