//Roman numerals are represented by seven different symbols: I, V, X, L, C, D //four. The same principle applies to the number nine, which is written as IX. //There are six instances where subtraction ...

Java leetcode Symbol Value I 1 V 5 X 10 L 50 C 100 D 500 M 1000 For example, 2 is written as II in Roman numeral, just two one's added together. 12 is written as XII, which is simply X + II. The ...