expanding an array

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Anand Anand
Anand Anand 2011-4-3
I need to compare 2 arrays A and B which are unequal in length.So,I need to find the shorter of the 2 arrays and add additional zeros in it so that the arrays are of the same length and so they can be compared by 'if' statement

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回答（2 个）

the cyclist
the cyclist 2011-4-3
Another way, that truncates rather than appends zeros. (I know you specified otherwise, but thought this might be useful as well.)
A = 1:10
B = 1:8
shorterLength = min(length(A),length(B));
compare = A(1:shorterLength)==B(1:shorterLength)
Walter Roberson
Walter Roberson 2011-4-3
What is the point? The two arrays cannot be the same if they have a different number of elements.
tA = A;
tB = B;
LD = length(A) - length(B);
if LD < 0
tA(end-LD) = 0; %extends matrix!
elseif LD > 0
tB(end+LD) = 0; %extends matrix!
end
if isequal(tA, TB)
...
end

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