Inversions in an Array: Difference between revisions

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* [[Algorithms#b3slp3|Algorithms | Divide and Conquer]]
* [[Algorithms#b3slp3|Algorithms | Divide and Conquer]]
=Problem=
=Problem=
Given an array containing n numbers, in an arbitrary order, find all '''inversions''', where an inversion is defined as a pair (i, j) of array elements where <code>i < j</code> and <code>A[i] > A[j]</code>.
Given an array containing n numbers, in an arbitrary order, find all '''inversions''', where an inversion is defined as a pair (i, j) of array elements where i < j and A[i] > A[j].


=TODO=
=TODO=

Revision as of 17:47, 20 September 2021

Internal

Problem

Given an array containing n numbers, in an arbitrary order, find all inversions, where an inversion is defined as a pair (i, j) of array elements where i < j and A[i] > A[j].

TODO

  • problem statement
  • algorithm
  • complexity with Master Method

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