Problem: Roman To Integer
Given a string A representing a roman numeral. Convert A into an integer.
A is guaranteed to be within the range from 1 to 3999.
The only argument given is string A.
Return an integer which is the integer verison of roman numeral string.
Input 1: A = "XIV" Output 1: 14 Input 2: A = "XX" Output 2: 20
The approach to this problem is quite straightforward, you just need to understand how Roman Numeral Systems is assigned to a number.
We are iterating the string only, so time complexity would be O(N)