How can I create a vector like this : X = [1, 2, 1, 2 ......
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cheng en tsai
el 2 de Mzo. de 2021
Hi,
How can I create a vector X = [ 1, 2, 1, 2 ....... ] with n value.(which n value can be odd or even).
Is there possible to use only two instructions?
thanks.
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Walter Roberson
el 2 de Mzo. de 2021
Is there possible to use only two instructions?
No. You need a minimum of 3 instructions even for the case where n is even. You can construct 1:2 or [1 2] but either way that takes one instruction. You need to divide n by 2, which takes one instruction. Replicating the vector takes a minimum of 1 instruction.
You can do the whole thing in four instructions if it is acceptable to have two assignment statements. I think it might take 6 instructions if you are only permitted to use a single assignment statement.
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Stephen23
el 2 de Mzo. de 2021
n = 9;
v = 2-mod(1:n,2)
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Stephen23
el 2 de Mzo. de 2021
Editada: Stephen23
el 2 de Mzo. de 2021
@Walter Roberson: yes, I also noticed that.
I suspect that "instructions" is as equally well-defined by the same professors/tutors/teachers who also specify no "inbuilt" functions. In some sense, even the hard-coded numbers are "instructions" to the MATLAB parser.
Perhaps the person who set this assignment can clarify this for us.
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