In the given matrix, extract element that have odd rows and column number.
For example
A=[1 4 2 3 5] B=extractodd(A);
B should be
[1 2 5]
And, if A is
[1 2 3 4 5 6 7 8 9]
B should be
[1 3 7 9]
This user (ALBERT ALEXANDER STONIER) appears to have gamed the system, with fraudulent "likes" of this unremarkable solution submitted by 'sock-puppet' accounts. —DIV
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Sort the vector with the given index
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