**permutation_distance**,
an Octave code which
estimates the expected value of the Ulam distance
between a pair of randomly selected permutations of the same order.

The computer code and data files made available on this web page are distributed under the MIT license

**permutation_distance** is available in
a MATLAB version and
an Octave version and
a Python version.

octave_distance, an Octave code which estimates the typical distance between a pair of points randomly selected from the surface or interior of a geometric object such as a circle, disk, sphere, cube.

- permutation_ascending_subsequence.m, returns the longest ascending subsequence in a permutation.
- permutation_distance_stats.m, estimates the mean and variance of the pairwise distance between permutations, using sampling.
- permutation_distance_ulam.m, returns the Ulam distance between a pair of permutations.
- permutation_inverse.m, returns the inverse of a permutation.
- permutation_multiply.m, multiplies two permutations.
- permutation_order.m, returns the order of a permutation.
- permutation_print.m, prints a permutation.