http://code.activestate.com/recipes/tags/discrete-python/2016-03-03T07:12:28-08:00ActiveState Code Recipes2016-02-21T06:00:46-08:00Samuel James Ericksonhttp://code.activestate.com/recipes/users/4187478/http://code.activestate.com/recipes/579051-get-the-inversion-number-of-a-permutation/

<p style="color: grey"> Python recipe 579051 by <a href="/recipes/users/4187478/">Samuel James Erickson</a> (<a href="/recipes/tags/combinatorics/">combinatorics</a>, <a href="/recipes/tags/discrete/">discrete</a>, <a href="/recipes/tags/inversion/">inversion</a>, <a href="/recipes/tags/math/">math</a>, <a href="/recipes/tags/permutations/">permutations</a>). Revision 2. </p> <p>This function takes a permutation in the form of a list and returns the number of inversions in the permutation. </p>

2016-03-03T07:12:28-08:00Samuel James Ericksonhttp://code.activestate.com/recipes/users/4187478/http://code.activestate.com/recipes/578631-extended-euclidean-algorithm/

<p style="color: grey"> Python recipe 578631 by <a href="/recipes/users/4187478/">Samuel James Erickson</a> (<a href="/recipes/tags/algorithm/">algorithm</a>, <a href="/recipes/tags/common/">common</a>, <a href="/recipes/tags/discrete/">discrete</a>, <a href="/recipes/tags/divisor/">divisor</a>, <a href="/recipes/tags/euclid/">euclid</a>, <a href="/recipes/tags/extended/">extended</a>, <a href="/recipes/tags/gcd/">gcd</a>, <a href="/recipes/tags/greatest/">greatest</a>, <a href="/recipes/tags/logarithm/">logarithm</a>). Revision 2. </p> <p>given input of integers a and b, this program returns GCD(a,b) along with integers x and y such that ax+by=GCD(a,b).</p>