Given a string s, return a new string with the characters of s in reverse order. The input is a Python string, and the output should also be a string. Do not use built-in reverse helpers that solve the entire problem in one step.
Example 1:
Input: s = "hello"
Output: "olleh"
Explanation: The characters are returned from right to left.
Example 2:
Input: s = "Zensar"
Output: "rasneZ"
Explanation: Every character changes position symmetrically around the center.
0 <= len(s) <= 10^5s may contain letters, digits, spaces, and punctuation