MATLAB: How to count the total number ‘AA’ repeats in the text? I managed to count how many times it appears in each cell, but don’t know how to add it up.

Question

clear all;
%read SeqDNA file
Seq_Out_File='./Seq_Out.txt';
fileID=fopen(Seq_Out_File);
C=textscan(fileID, '%s');
NAA=(strfind(C{1},'AA'));
x=cellfun('length', NAA);

Answer 1

S = fileread(Seq_Out_File);
no_overlap_count = length(regexp(S, 'AA'));
with_overlap_count = length(regexp(S, 'A(?=A)'));