How do I get matlab to list all numbers from 1 to 100 divisible by 6?

I only have basic matlab knowledge, so the simpler the code the better! Something that would be easy for me to understand. Thanks!

Answer 1

[Stephen23]

Method zero: colon and times:

>> 6.*(1:16)
ans =
    6   12   18   24   30   36   42   48   54   60   66   72   78   84   90   96

Method one: mod and logical indexing:

>> v = 1:100; % any vector
>> v(mod(v,6)==0)
ans =
    6   12   18   24   30   36   42   48   54   60   66   72   78   84   90   96

Method three: linear indexing:

>> v(6:6:end) % v starts from 1
ans =
    6   12   18   24   30   36   42   48   54   60   66   72   78   84   90   96

Method three: colon:

>> 6:6:100
ans =
    6   12   18   24   30   36   42   48   54   60   66   72   78   84   90   96

Method four: cumsum:

>> cumsum(6*ones(1,16))
ans =
    6   12   18   24   30   36   42   48   54   60   66   72   78   84   90   96

Method five: rdivide, fix, eq, and logical indexing:

>> w = v./6;
>> v(fix(w)==w)
ans =
    6   12   18   24   30   36   42   48   54   60   66   72   78   84   90   96

[John D'Errico]

+1. But, um, you missed some. This one seems basic:

flip(round(roots(poly(1:16)))*6)'
ans =
   6    12    18    24    30    36    42    48    54    60    66    72    78    84    90    96

As is this:

kron(6,1:16)
ans =
   6    12    18    24    30    36    42    48    54    60    66    72    78    84    90    96

But there are others just as trivial:

find(rand(1,16))*6
ans =
   6    12    18    24    30    36    42    48    54    60    66    72    78    84    90    96

How could you possibly have missed those? Or this one?

'$*06<BHNTZ`flrx~'-30
ans =
   6    12    18    24    30    36    42    48    54    60    66    72    78    84    90    96

;-)

[Stephen23]

round(roots(poly(1:16)))

ouch... that really made my eyes water.

[Jake Jacobs]

im terrible at this, how do you get 16 at the start though?

[Walter Roberson]

16 is floor(100/6) -- which is to say the maximum number of full multiples of 6 that fits into 100.