How to vectorize the following code snippet ?

2021 2 15
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更新时间：2021 2 15
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M = randi([-10 10],10,10);
[m, n] = size(M);
out = zeros(m, n);
for x = 1:m
for y = 1:n
if M(x, y) > 0
out(x, y) = 1;
else if M(x, y) == 0
out(x, y) = 0;
else
out(x, y)=-1;
end
end
end

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 采纳的回答

Star Strider
Star Strider 2021-2-15

0 个投票

That can all be reduced to:
out = zeros(size(M))-1;
out(M>0) = 1;
out(M==0) = 0;
producing the same result.

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