For a detailed answer, why array_multisort does not match your needs, view this answer, please: PHP array_multisort not sorting my multidimensional array as expected In short: You want to sort an array based on a predefined order. The Answer is also given over there, but i copied one solution to this answer, too: Use usort … Read more
From documentation: Note that the table does not remain in this order after inserts and deletes Actually, if you issue SELECT … ORDER BY to this table, the option to ALTER TABLE won’t spare you of filesort, but instead make filesort much faster. Sorting an already ordered set is equivalent to browsing this set to … Read more
A heap is the best data structure for this operation and Python has an excellent built-in library to do just this, called heapq. import heapq def nth_largest(n, iter): return heapq.nlargest(n, iter)[-1] Example Usage: >>> import random >>> iter = [random.randint(0,1000) for i in range(100)] >>> n = 10 >>> nth_largest(n, iter) 920 Confirm result by … Read more
Use sort_values, i.e. means = means.sort_values(). [Pandas v0.17+] (Very old answer, pre-v0.17 / 2015) pandas used to use order() method: means = means.order().
If the locale in your system is set correctly then you can use localeCompare method instead of greater-than operator to compare the strings – this method is locale aware. function sortComparer(a,b){ return a.title.localeCompare(b.title) };
As has been pointed out in the comments, the definition of recent isn’t correct javascript. But assuming the dates are strings: var recent = [ {id: 123,age :12,start: “10/17/13 13:07”}, {id: 13,age :62,start: “07/30/13 16:30”} ]; then sort like this: recent.sort(function(a,b) { return new Date(a.start).getTime() – new Date(b.start).getTime() }); More details on sort function from … Read more
git version 1.8.4 added an –author-date-order argument to git log; according to the release notes, “the output is topologically sorted and commits in parallel histories are shown intermixed together based on the author timestamp.”
Use argsort as follows: arr1inds = arr1.argsort() sorted_arr1 = arr1[arr1inds[::-1]] sorted_arr2 = arr2[arr1inds[::-1]] This example sorts in descending order.
What do you want to order by, other than the known top item? If you don’t care, you can do this: var query = allCountries.OrderBy(x => x.id != 592).ToList(); Basically, “false” comes before “true”… Admittedly I don’t know what this does in LINQ to SQL etc. You may need to stop it from doing the … Read more
I’m no expert at SQL, but why not just sort by if something is null first then sort by how you wanted to sort it. Photo.order(‘collection_id IS NULL, collection_id DESC’) # Null’s last Photo.order(‘collection_id IS NOT NULL, collection_id DESC’) # Null’s first If you are only using PostgreSQL, you can also do this Photo.order(‘collection_id DESC … Read more