how can i make a function which will return the largest and the second largest component?
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how can i make a function that accepts as input a vector of integers, which will return the largest and the second largest component of the vector for the first i think that is max1=max(max(C)) any idea for max2?
采纳的回答
Do you mean the maximum over a matrix (see tags and example max(max(C))) or over vector (body of the question)?
- Find maximum value with the corresponding index
- Set value of this index to NaN
- Find maximum again.
Alternative, which is slower due to the expensive sorting for large inputs:
- SORT helps.
Which values should be replied, if the highest maximum is not unique?
[EDITED: Sorry, I've overseen that this is a homework!]
更多回答（1 个）
Or:
if sum(C==max(C))==1
second = max(C(C<max(C)));
else
second = max(C);
end
i.e. test if the maximum is unique, if the max is not unique the second is equal to max(C)
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