What is bitmap concatenation?

Question

C++ / C#

The entire formulation of the problem sounds like this: Key type is a text string of arbitrary length. String conversion - concatenation of bit images of characters. The hashing method is multiplicative. The collision resolution method is quadratic.
I can not find a clear answer to the question on the Internet: What is the concatenation of bit images of characters?
I will be grateful for your help!

Answer 1

What is bitmap concatenation?

I assume that the bitmap of a string is determined by string "addition" of bitmaps of characters. For example, given the alphabet {A,B,C,D} and the bit representation A:00,B:01,C:10,D:11, the string ABBA would be 00010100.

Answer 2

What is concatenation you should know, and the bit image of a character is most likely the ascii number of the character in binary form