Lexicography in Java

Question

If I wanted to simply replace a letter or a number with one immediately preceding it, how would I go about that? For example, I wanted to replace the letter 'c' with 'b' in my code, or 3 with 2. Any tips?

Answer 1

The "char" type is numeric, and you can subtract one from it to get the answer you want. Work out what you want to do with '0' or 'a'.