problme 71 init complete

Author: developer-shourav

problem71/problem.md

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+## Problem 71:
+
+### Implement a function that converts a Roman numeral to an integer. The function should take a Roman numeral string (e.g., "IX" or "XXI") as input and return the corresponding integer value.

problem71/problem71.js

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+/* 
+
+Implement a function that converts a Roman numeral to an integer. The function should take a Roman numeral string (e.g., "IX" or "XXI") as input and return the corresponding integer value.
+
+ */
+