Importing multiple .txt files and then creating a new matrix

I have 20 .txt files for group 1 and 17 .txt files for group 2. Each .txt file has 90 x 90 entries. I'd like to import all 37 .txt files, and then ultimately create an array where entries i,j from each group 1 file are in one vector of size 20, and then entries i,j from each group 2 file are in a vector of size 17.

Answer 1

[Walter Roberson]

http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F