Convert plain text to/from leetspeak.
How it works
- Encoding applies a small deterministic set of common letter-to-digit substitutions.
- Decoding reverses only those unambiguous substitutions in the implemented map.
Example
- TEST becomes 7357 with the default mapping.
Assumptions and limitations
- Leetspeak has no single standard; many substitutions are context-dependent, so reverse conversion cannot infer every possible original spelling.