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Re: Swap even/odd elements in array [message #44502]

Wed, 22 June 2005 02:20

Paolo Grigis
Messages: 171
Registered: December 2003

Senior Member

This is yet another possibility...

a=['a0','a1','a2','a3','a4','a5']

n=n_elements(a)
b=lindgen(n+1)
c=b+2*(b mod 2)-2

ashifted=a[c[1:n]]
print,a,ashifted

Paolo

photosalex@freenetname.co.uk wrote:
> Hi All,
> sorry if the question is trivial:
> how could I swap even and odd elements of a 1-D 16-bit INT array
> without using loops? That is, if the source array is
>
> [a0,a1,a2,a3,..]
>
> I want it to be
>
> [a1,a0,a3,a2,..]
>
> Thanks!
>

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Re: Swap even/odd elements in array

By: Paolo Grigis on Wed, 22 June 2005 02:20

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