Odd Numbers with missing multiples of a number

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Brodie Arthur
Brodie Arthur 2019-9-14
编辑： madhan ravi 2019-9-14
Hi guys, trying to figure out how to create a function that will allow me get all odd numbers but skip multiples of 3? Also would like to achieve this without adding a for loop. These are the tests:
Any help to set me on track would be appreciated
This is the code I have so far:
function out = oddsNoFives(a)
x = 1:2:a;
disp(x)
if mod(x,10)~=3
disp(x)
end
end
Im just trying to create the basic array from 1 to a to start with then work my way up from there. I dont understand why my "if mod(x,10)~=3" is not working properly either. Not very fluent so just trying to get tips but i understand the math involved

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回答（1 个）

madhan ravi
madhan ravi 2019-9-14
I leave the understanding part to the reader to understand whats going on:
oddsNoFives=@(x,y)nonzeros((~sum(~mod(1:x,[2;y]),1)).*(1:x)).'
% Calling the function
oddsNoFives(30,[])
oddsNoFives(30,5)
oddsNoFives(30,7)

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