Problem

In AlphaSense, query text entered in search surfaces may need simple string transformations during client-side processing. Write a function that takes a string s and returns a new string with its characters in reverse order.

Formal Specification

• Input: a string s
• Output: a string containing the characters of s in reverse order
• Your function should preserve all characters exactly as they appear, including spaces, punctuation, digits, and letter casing.

Examples

Example 1

• Input: s = "alphasense"
• Output: "esnesahpla"
• Explanation: The characters are returned from last to first.

Example 2

• Input: s = "AI 2024!"
• Output: "!4202 IA"
• Explanation: Spaces and punctuation are reversed along with letters and digits.

Constraints

• 0 <= len(s) <= 10^5
• s may contain uppercase letters, lowercase letters, digits, spaces, and punctuation

Notes

1. Return the reversed string.
2. Do not remove or modify any characters.
3. Aim for a linear-time solution.
4. In Python, strings are immutable, so an efficient solution typically converts the string to a list, swaps characters with two pointers, and joins the result.