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Solution: Integer to Roman

Explore how to convert an integer into its Roman numeral representation using a greedy algorithm. Learn to apply the subtractive rules and symbol ordering to achieve the correct and minimal Roman numeral output. This lesson helps you understand and implement the conversion with constant time and space complexity.

Statement

Given an integer, num, convert it to its Roman numeral representation.

Roman numerals are built using the following 77 symbols:

Symbol

Value

I

1

V

5

X

10

L

50

C

100

D

500

M

1000

Roman numerals are constructed by converting each decimal place value from highest to lowest using these rules:

  • If the value does not start with 44 or ...