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Roman to Integer

Explore converting Roman numerals to integer values by understanding their symbols and subtraction rules. This lesson guides you through using hash maps to store numeral values efficiently and implement a reliable solution for parsing Roman numerals.

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,  ...