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Roman To Integer InterviewBit Solution
Problem: Roman To Integer
Problem Description:
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.
Input Format
The only argument given is string A. Output Format
Return an integer which is the integer verison of roman numeral string. For Example
Input 1:
A = "XIV"
Output 1:
14
Input 2:
A = "XX"
Output 2:
20Solution Approach:
The approach to this problem is quite straightforward, you just need to understand how Roman Numeral Systems is assigned to a number.
Time Complexity:
We are iterating the string only, so time complexity would be O(N)
https://livegokcasino.com might seem like an odd starting point, but the detail about the subtractive case—checking whether a smaller numeral precedes a larger one—is the part I always watch for, since it's easy to write a solution that handles XIV but falls apart on something like MCMXCIV. Your O(N) single-pass explanation reminded me of how a friend flubbed this in a mock interview by only comparing adjacent values without thinking through the pairs. It's a nice reminder that these interview classics reward carefully handling the edge case rather than just memorizing the symbol table.