How should I practice Minimum Hidden Roman Value?

Start by reading the full statement, solve the visible examples, then compare the pattern against related Zopsmart online assessment problems in FastPrep.

Is Minimum Hidden Roman Value associated with Zopsmart?

FastPrep tags this as a Zopsmart online assessment coding practice problem when the problem catalog has that company and stage context.

Problem

Minimum Hidden Roman Value

Learn this problem

ZOZopsmartOA

Problem statement

You are given a string text. Extract only the Roman numeral letters I, V, X, L, C, D, and M, preserving their original order.

After extraction, parse the letters from left to right. You may either take one letter as its normal Roman value, or combine two adjacent extracted letters as one subtractive pair if the pair is one of IV, IX, XL, XC, CD, or CM. A combined pair contributes the second value minus the first value.

Return the minimum total value obtainable by choosing which adjacent valid subtractive pairs to combine.

Function

minimumHiddenRomanValue(text: String) → int

Examples

Example 1

text = "I HAVE EATEN"return = 4

The extracted Roman letters are IV. Combining them as the subtractive pair IV gives value 4.

Example 2

text = "XIV"return = 14

Take X as 10 and combine IV as 4, for a total of 14.

Constraints

text may contain arbitrary uppercase letters and spaces.
Only I, V, X, L, C, D, and M are used after extraction.