Lesson #2 - Converting Roman Numericals

Geo's Helping Tutorials Lesson #2 - Converting Roman Numericals Write a function (or a script) in REBOL that converts a given Roman numerical to its decimal equivalent in range of 1 thru 3999. Returns 'none if invalid numerical. E.g., IX --> 9 LXXXI --> 81 MCMLII --> 1952 MMI --> 2001 MIM --> none (invalid) MMMCMXCIX --> 3999 For those who remember vaguely what each Roman character represents: I = 1 V = 5 X = 10 L = 50 C = 100 D = 500 M = 1000 (Please correct me if I am wrong.) BONUS: Write a function (or a refinement) that does the reverse of the conversion above. SUBMISSION: Please send your code (either function or script) to my email address at [gmassar--dreamsoft], not this list. Due: Friday, Oct. 27. A reasonably good solution or two will be selected to post at Rebol_New eGroup for "class discussion". Your help will be much appreciated. Geo... helping tutor