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Making Matrices with Loops
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This is the assignment I was given:
Create a script called script19.m. The script should assume scalar value of n is assigned in the command window. The script should create an n-by-n matrix A where
A = [nn ... n2 n1;
....
2n ... 22 21;
1n ... 12 11]
An example execution is as follows:
>> n = 3;
>> script19
A =
33 32 31
23 22 21
13 12 11
This is the script I wrote but I still can't get an answer:
A = zeros(N);
for ii = N : 1
for jj = (10*ii) + N : (10* ii) + 1
A = jj
end
end
Am I on the right track??
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回答 (3 件)
the cyclist
2015 年 5 月 26 日
You are on the right track. I can give you a couple hints:
First, be aware that the loop
for ii = N : 1
won't work. I think you want
for ii = N : -1 : 1
so that ii counts down. Similarly for your other loop.
Next, notice that inside your loop, you are not writing to specific positions in your A matrix. You'll need to fix that.
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