Solution - Roman numeral to integer

1, 095

1,095

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Step-by-step explanation

1. Parse Roman numeral to integer input

$M X C V$

Parse and normalize the Roman numeral input, then validate its canonical form and range.

2. Expand Roman tokens into values

$M = 1000$

$X C = 90$

$V = 5$

$M (1000) + X C (90) + V (5) = 1000 + 90 + 5$

Scan the Roman numeral left-to-right, convert each token (single symbol or subtractive pair) into a numeric value, and prepare the additive expansion.

3. Conclude integer result

$1000 + 90 + 5 = 1095$

$M X C V = 1095$

Add the expanded values to get the final integer and restate the canonical Roman-to-integer equality.

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Why learn this

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Roman numerals still appear in clocks, chapter headings, outlines, and events. Converting them quickly helps in everyday reading and interpretation.

Terms and topics

Roman numeral to integer