http://code.activestate.com/recipes/langs/python/tags/bell/2013-12-23T02:44:43-08:00ActiveState Code Recipes2013-12-23T02:44:43-08:00Chris Smithhttp://code.activestate.com/recipes/users/2725752/http://code.activestate.com/recipes/578792-bell-permutations-using-evens-nonrecursive-algorit/

<p style="color: grey"> Python recipe 578792 by <a href="/recipes/users/2725752/">Chris Smith</a> (<a href="/recipes/tags/bell/">bell</a>, <a href="/recipes/tags/johnson/">johnson</a>, <a href="/recipes/tags/permutations/">permutations</a>, <a href="/recipes/tags/steinhaus/">steinhaus</a>, <a href="/recipes/tags/trotter/">trotter</a>). Revision 2. </p> <p>The "bell" permutations are those in which only a single inversion of neighbors occurs to generate the next permutation.</p>