Insert zeros in a vector
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Let's assume my vector is
A = [1 2 3 7 9 10 45 93 122 150]';
I want to put zeros in between these numbers.
A = [1 2 3 0 0 0 7 0 9 10 0 0 .....]';
采纳的回答
Andrei Bobrov
2017-1-20
编辑：Andrei Bobrov
2017-1-20
One of ways:
A = [1 2 3 7 9 10 45 93 122 150]'
ii = randi(3,numel(A),1);
t = cumsum(ii) < numel(A);
ii = ii(t);
z = arrayfun(@(x)zeros(x,1),ii(1:end-1),'un',0);
C = mat2cell(A(1:sum(ii)),ii,1);
out = [C';[z',{[]}]];
out = cat(1,out{:});
更多回答（1 个）
A = [1 2 3 7 9 10 45 93 122 150]';
B = zeros(150, 1);
Index = [true(1, numel(A)), false(1, numel(B) - numel(A)];
Index = Index(randperm(numel(Index));
B(Index) = A;
Now the result is filled at random places by zeros such that the total length is 150.
[EDITED] Easier:
A = [1 2 3 7 9 10 45 93 122 150]';
B = zeros(150, 1);
Index = randperm(numel(B), numel(A));
B(Index) = A;
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