Beefy Boxes and Bandwidth Generously Provided by pair Networks
Problems? Is your data what you think it is?
 
PerlMonks  

Re^3: An informal introduction to O(N) notation

by Anonymous Monk
on Aug 29, 2007 at 14:14 UTC ( #635807=note: print w/ replies, xml ) Need Help??


in reply to Re: Re: An informal introduction to O(N) notation
in thread An informal introduction to O(N) notation

While we're nitpicking: O() defines an upper bound (typically, but not exclusively, on worst case behaviour) Ω() defines a lower bound (again typically, but not exclusively, on best-case behaviour) An algorithm is said to run in Θ(f(n)) if it runs in O(f(n)) and in Ω(f(n)), i.e. the upper and lower bounds are no more than a constant multiple of each other. It is a tighter definition than average-case execution complexity which depends on first defining the properties of an "average" input. I think what you're trying to define above is average-case execution complexity - by definition of the Θ() notation your statement above cannot be true. BTW mergesort is O(n lg n). - Menahem


Comment on Re^3: An informal introduction to O(N) notation

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://635807]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others about the Monastery: (10)
As of 2014-12-18 22:05 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    Is guessing a good strategy for surviving in the IT business?





    Results (66 votes), past polls