How can I remove elements divisible by 3,4, and 5 in a vector?

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Bridgit Nata
Bridgit Nata 2016-9-21
回答： karim karim 2020-1-10
I've created a vector x = 1:50 but I'm having trouble in how I can remove elements divisible by 3, 4, and 5, and then display it in a new vector. Thank you!

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采纳的回答

Sean de Wolski
Sean de Wolski 2016-9-21
x = 1:50;
x([3:3:50,4:4:50,5:5:50]) = []
  2 个评论
James Tursa
James Tursa 2016-9-21
@Nathalie: Note that this solution deletes the elements whose "indexes" are divisible by 3, 4, 5. In your particular example, since the indexes match up with the values one-for-one, this gives the same solution as below.

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更多回答（3 个）

Andrei Bobrov
Andrei Bobrov 2016-9-21
x = (1:50)';
out = x(all(bsxfun(@rem,x,3:5),2));
  2 个评论
James Tursa
James Tursa 2016-9-21
@Nathalie: Note that this solution deletes the elements whose "values" are divisible by 3, 4, 5. In your particular example, since the indexes match up with the values one-for-one, this gives the same solution as above.

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George
George 2016-9-21
You can do this using mod().
karim karim
karim karim 2020-1-10
This is a general solution :
x=input(' x = ');
i=1;
while i<= length(x)
if mod(x(i),3)==0 || mod(x(i),4)==0 || mod(x(i),5)==0
x(i)=[];
else i=i+1;
end
end
disp(x);

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