Leetcode Python - Easy - Unique Morse Codes (Linear - Single Pointer)

Concepts:
- ord(char) to convert a char to its corresponding ASCII number in the ASCII table; The ASCII table is used to represent characters as a number
- ord(char) - ord('a') to get the corresponding index for that char in the morse code table.
- String concatenation to concatenate character transformations to form the full string transformation
- Using a set() to deduplicate transformations

Question Link:

American Standard Code for Information Interchange (ASCII)
- Mapping a character to its corresponding number in the ASCII table