040000 tree 81b2f68f67990c54bc25816628ac213911e2b962	is.sorted
040000 tree a15e330cda66ad0ab3f5d36a4b1411c25229df7c	partial.sort.copy
040000 tree d26281e5e41150048952a74de7fb7edbad286900	partial.sort
040000 tree 6cb62cf43d61313f70554c6ddbfbdea7e7db130f	sort
040000 tree 982a20811538cb7d72ce4f74d970447f7850aab4	stable.sort