secons max number in a vector

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PChoppala
PChoppala 2011-11-24
Hi I need to find maximum and second maximum number in a vector. Can you please help?
For max, its max(X), but for second max I am unable to figure out.
Your help is appreciated
P

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Rick Rosson
Rick Rosson 2011-11-24
a = max(X);
Y = X(X ~= a);
b = max(Y);
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Walter Roberson
Walter Roberson 2011-11-25
There are apparently efficient linear-time routines to find the N largest or N smallest numbers in a list, and supposedly they do not need to do a mini-sort of N elements to find the proper place in the list for each new value being tested. I have not yet been able to understand the logic in the paper that describes the internal comparison scheme.
Rick Rosson
Rick Rosson 2011-11-25
Everyone makes mistakes. Glass houses...

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