String Reversal Function | Dataford Interview Questions

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Problem

UMass Boston WISER displays short notification messages that may need to be rendered in reverse for a formatting test. Write a function that returns the characters in a message in reverse order.

Formal Specification

Implement reverse_wiser_message(message).

Input: message, a Python string.
Output: A new string containing the same characters in reverse order.
Preserve every character exactly, including spaces, punctuation, digits, and Unicode characters.

Python strings are immutable, so build a mutable character list, reverse it with two pointers, then join it into the result.

Constraints

0 <= len(message) <= 100,000
message may contain letters, digits, whitespace, punctuation, and Unicode code points
Return a new string
Reverse by Python character positions

Function Signature

def reverse_wiser_message(message):