MATLAB: How can i make a function which will return the largest and the second largest component

matlab matrix max

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?

Best Answer

Do you mean the maximum over a matrix (see tags and example max(max(C))) or over vector (body of the question)?
  1. Find maximum value with the corresponding index
  2. Set value of this index to NaN
  3. 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!]
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