1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Algorithem & Data Structure help

  1. Jun 7, 2008 #1
    problem: Show how to find the t-th largest element (t - 1 elements are larger and
    n - t elements are smaller) in the set of n elements in (n - t) + (t - 1)log (n - t + 2) comparisons.

    I've tried as hard as I can to solve this, and I came to relalize that i need to divide the array into two groups, one of (n-t+1) and the other to (t-1) elements.
    i can find the largest element in the (n-t+1) group, which will be the t-th largest element of all.
    what i cant understand is what should i do with the log expression. what is the +2 element inside the brackets stands for...

    will appriciate an answer, thanks.
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted