Solution: Roman to Integer
Explore how to convert Roman numeral strings into integer values by using a hash map to efficiently handle both additive and subtractive notation. Learn to iterate through the string, recognize special subtractive pairs, and implement a linear-time algorithm that handles all valid Roman numerals consistently.
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We'll cover the following...
Statement
Given a string, s, representing a Roman numeral, return the integer value of the Roman numeral.
Seven different symbols represent Roman numerals:
Symbol | Value |
I | 1 |
V | 5 |
X | 10 |
L | 50 |
C | 100 |
D | 500 |
M | 1000 |
So, in Roman numerals,