Combination of numbers with specific order
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Fayyaz
am 13 Okt. 2017
Kommentiert: Fayyaz
am 13 Okt. 2017
Hi all,
I would like to create a matrix of combination of numbers (with five columns). The number are: 4,6,8,10,12,14
The matrix should be like this:
4 4 4 4 4
4 4 4 4 6
4 4 4 6 6
.
.
.
.
14 14 14 14 14
Please help me out!
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Andrei Bobrov
am 13 Okt. 2017
Bearbeitet: Andrei Bobrov
am 13 Okt. 2017
out = nchoosek(kron(4:2:14,ones(1,5)),5);
or
x = kron(4:2:14,ones(1,5));
out = hankel(x(1:end-4),x(end-4:end));
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Walter Roberson
am 13 Okt. 2017
Slightly vectorized:
V = 4 : 2 : 14;
num_V = length(V);
pattern = [1 1 1 1 2;
1 1 1 2 2;
1 1 2 2 2;
1 2 2 2 2];
num_pattern = size(pattern,1);
nrow = num_pattern * (num_V - 1) + 1;
out = zeros(nrow, 5);
out(1, :) = V(1);
for idx = 2 : num_V
pair = [V(1), V(idx)];
this_set = pair(pattern);
start = 1 + (idx-2) * num_pattern;
out(start + 1 : start + num_pattern, :) = this_set;
end
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