How to find the K max or min values contained in a vector?
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Before I attempt to write the code myself, I was wondering if a function already exists to find the k max values of a vector.
E.g. test_vec = [ 5 9 8 3 2 1 7 6]; k = 3; [max_vals, max_ids] = max_elems(test_vec, k); max_vals = [ 9 8 7] max_ids = [2 3 7]
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Answers (1)
Sean de Wolski
on 13 Feb 2012
sort it 'descend' and extract the first k values.
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Walter Roberson
on 13 Feb 2012
[max_vals, max_ids] = sort(test_vec, 'descend');
max_vals = max_vals(1:k);
max_ids = max_ids(1:k);
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