Solution: Roman to Integer
Understand how to convert Roman numerals to their integer values by applying additive and subtractive principles. Learn to use a hash map for constant-time lookup of numeral values and subtractive pairs, then write a linear-time code solution that parses the numeral string efficiently.
We'll cover the following...
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,