lodash multi-column sortBy
There’s a nifty method to sort an array of objects based on several properties: However that is only for ascending sorting. Is there some handy way of defining direction per column? E.g.
sorting
jQuery sort elements using data id
I have an HTML structure as follows: I would like to sort them as: I am using the following function: It is not working as expected. It is working well for the first run but after adding new element or changing the data-sid attributes it no longer works. Demo: http://jsfiddle.net/f5mC9/1/ Not working?
How to sort 2 dimensional array by column value?
Can any one help me sort a 2 dimensional Array in JavaScript? It will have data in the following format: It should look like this when sorted: So basically, sorting by the first column. Cheers
Using insertion sort for descending order?
To sort in descending order, you only need to change the comparison: Note the < instead of >.
Sorting arrays in NumPy by column
176 @steve‘s answer is actually the most elegant way of doing it. For the “correct” way see the order keyword argument of numpy.ndarray.sort However, you’ll need to view your array as an array with fields (a structured array). The “correct” way is quite ugly if you didn’t initially define your array with fields… As a … Read more
VBA array sort function?
Take a look here:Edit: The referenced source (allexperts.com) has since closed, but here are the relevant author comments: There are many algorithms available on the web for sorting. The most versatile and usually the quickest is the Quicksort algorithm. Below is a function for it. Call it simply by passing an array of values (string … Read more
How to sort an array of integers correctly
By default, the sort method sorts elements alphabetically. To sort numerically just add a new method which handles numeric sorts (sortNumber, shown below) – Documentation: Mozilla Array.prototype.sort() recommends this compare function for arrays that don’t contain Infinity or NaN. (Because Infinity – Infinity is NaN, not 0). Also examples of sorting objects by key.
How to Sort a Multi-dimensional Array by Value
Try a usort. If you are still on PHP 5.2 or earlier, you’ll have to define a sorting function first: Starting in PHP 5.3, you can use an anonymous function: And finally with PHP 7 you can use the spaceship operator: To extend this to multi-dimensional sorting, reference the second/third sorting elements if the first … Read more
How to sort in-place using the merge sort algorithm?
Knuth left this as an exercise (Vol 3, 5.2.5). There do exist in-place merge sorts. They must be implemented carefully. First, naive in-place merge such as described here isn’t the right solution. It downgrades the performance to O(N2). The idea is to sort part of the array while using the rest as working area for merging. For example … Read more
An example of Best Case Scenario for Quick Sort (Need someone to check if my answer is correct)
A condition for the best case for Quicksort is that the pivot always goes right smack in the middle (except perhaps in the very last stages), so much is definitely correct. On top of that you want as few swaps as possible, the precise configurations for that depend on the implementation details. One common implementation … Read more