MATLAB: How to preallocate X

excelpreallocation

tic
for aug = 1:168888%168888
    abc = 8;
    count = {};
    V = (abc);
    X = [X;[count V]];
end
for sep1 = 1:163440%163440



    abc = 9;
    count = {};
    V = (abc);
    X = [X;[count V]];
end
for oct= 1:168888%163440
    abc = 10;
    count = {};
    V = (abc);
    X = [X;[count V]];
end
for nov = 1:163440%163440
    abc = 11;
    count = {};
    V = (abc);
    X = [X;[count V]];
end
for dec= 1:168888%163440
    abc = 12;
    count = {};
    V = (abc);
    X = [X;[count V]];
end
 toc
    xlswrite('months2015.xlsx',X)

Best Answer

for aug = 1:168888%168888
    abc = 8;
    count = {};
    V = (abc);
    X = [X;[count V]];
end
Can be replaced by:
X=8*ones(1,168888);
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