In this section, we explore variants of our algorithms to solve several related problems. We first consider the. 1-d dynamic offline ranking/selection problem.
lg n)-time algorithm for counting the number of inversions in a permutation on n elements. This improves a long-standing previous bound of O(n lg n/ lg lg n).
Offline Orthogonal Range Counting, and Related Problems. Timothy M. Chan ... '07] “This problem is no easier than counting inversions in a permutation ...
We give an O(n √lg n)-time algorithm for counting the number of inversions in a permutation on n elements. This improves a long-standing previous bound of ...
Dec 18, 2013 · We give an -time algorithm for counting the number of inversions in a permutation on n elements. This improves a long-standing previous ...
We give an O(n √lg n)-time algorithm for counting the number of inversions in a permutation on n elements. This improves a long-standing previous bound of ...
Dec 3, 2008 · I added a few versions based on radix sort after attempting to read Counting Inversions, Offline Orthogonal Range Counting, and Related Problems ...
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What are counting inversions?
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Counting inversions, offline orthogonal range counting, and related problems. (with Mihai Patrascu). We give an O(n sqrt{lg n})-time algorithm for counting ...
Apr 25, 2017 · It is possible to find the total number of inversions by O(nlogn) running time (extension of merge-sort algorithm for example). Is there more ...
Jun 29, 2011 · I need to find an algorithm that receives an array of size N (with unique numbers) and return the number of inverses in time of O(n*log(n)).