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Roman to Integer

Explore how to convert Roman numeral strings to integers by understanding their symbolic values and special subtraction cases. Learn to implement this conversion efficiently using hash maps, helping you grasp problem-solving with mapping techniques and edge cases in coding interviews.

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,  ...