sequence/pattern problem
1 Ansicht (letzte 30 Tage)
Ältere Kommentare anzeigen
GMDI
am 8 Feb. 2021
Kommentiert: GMDI
am 9 Feb. 2021
Hi, I have a problem.
A=[1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 ];
From above A, I want B like below :
B=[1 2 3 4 8 9 10 11 15 16 17 18 ];
Now, if my A is like below:
A=[1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24];
Then B will be like below:
B=[1 2 3 4 8 9 10 11 15 16 17 18 22 23 24];
Which means. first four elements of A will be in the B; then the next three elements of A will not be in B; then next 4 elements of A will be in B; and so on so forth..
Last few elements of A will be / will not be in the B depend on if they are in the sequence or not.
I tried to explain the case study above. Please let me know if something is not clear.
Thanks in advance.
0 Kommentare
Akzeptierte Antwort
Walter Roberson
am 8 Feb. 2021
A=[1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 ];
B1 = chop43(A(1:20))
B2 = chop43(A)
function B = chop43(A)
full_blocks = floor(length(A)/7);
blocksizes = repmat([4 3], 1, full_blocks);
leftover = length(A) - full_blocks*7;
if leftover > 0 & leftover <= 4
blocksizes(end+1) = leftover;
elseif leftover >= 5
blocksizes(end+1:end+2) = [4, leftover-4];
end
blocks = mat2cell(A, 1, blocksizes);
B = [blocks{1:2:end}];
end
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Creating and Concatenating Matrices finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!