An example of 5 choose 2 using JavaScript:
var array = [0,1,2,3,4];
var result = array.flatMap(
(v, i) => array.slice(i+1).map(w => [v, w])
);
console.log(result);How could I apply this method to calculate 5 choose 3?
An example of 5 choose 2 using JavaScript:
var array = [0,1,2,3,4];
var result = array.flatMap(
(v, i) => array.slice(i+1).map(w => [v, w])
);
console.log(result);How could I apply this method to calculate 5 choose 3?
Take your code to the next level by adding another layer of nesting:
var array = [0,1,2,3,4];
var result = array.flatMap((v, i) =>
array.slice(i+1).flatMap((w, j) =>
array.slice(i+1+j+1).map(u =>
[v, w, u]
)
)
);
console.log(result);
If you find this approach challenging, consider implementing it with recursion instead:
function choose(arr, k, prefix=[]) {
if (k == 0) return [prefix];
return arr.flatMap((v, i) =>
choose(arr.slice(i+1), k-1, [...prefix, v])
);
}
console.log(choose([0,1,2,3,4], 3));I am encountering an issue where I have one div and I check the width of that div in jQuery. I then try to set the same width on the next div, but the width does not appear. Can someone please assist me with this? Here is my code: $(document).ready(funct ...
As I work on developing an application using the cutting-edge MEAN stack, I have successfully deployed the initial version to a server. This application comprises of a static HTML file (along with CSS and some images) as well as numerous JavaScript files. ...
const callback = (req, res) => { // Your application requests refresh and access tokens after verifying the state parameter if (state === null || state !== storedState) { ... } else { res.clearCookie(stateKey); var authOptions = {...} ...
Seeking a way to sort documents based on the last interaction, utilizing an array called meta_data.access_times. This array updates every time a user interacts, with a new date object being added to its last element. Is there a method to sort by the last e ...
I'm currently facing a challenge in removing multiple repetitive divs by utilizing ng-repeat. <!-- I have 21 of these --> <div class="table-row"> <span class="glyphicon glyphicon-wrench"></span> <label>Chlo ...
UPDATES (4th March, 2024): I have revised my question to eliminate unnecessary code and wording. It should now be clearer and more readable. I've learned that Spotify's scrollbar was created using javascript I'm looking to create a scrollb ...
Is there a way to create copies of selected divs within the same panel using a Javascript report designer? I attempted to achieve this by using the following code snippet: function DesignerClone() { $(".ui-selected").each(function () { va ...
While working in PHP, I have encountered a situation where I needed to call a PHP function using AJAX: <button onclick="loop()">Do It</button> function loop() { $.get("ajax.php", { action: "true" }, function(result) { $("in ...
Could someone please assist me with this problem in IE9? After I select a file to upload, then choose another one, it shows "fakepath" in IE9. See the image below for more information: https://i.sstatic.net/QsJFk.png https://i.sstatic.net/3nWRC.png htt ...
In an attempt to retrieve a vine thumbnail as outlined in their documentation, I wrote the following code: <!-- language: lang-js --> var onGetVineThumbnailSuccess = function( videoUrl ) { return function( response ) { var args = { videoUrl: ...
I am struggling to create a union type based on the keys of a Map. Below is a simple example illustrating what I am attempting to achieve: const myMap = new Map ([ ['one', <IconOne/>], ['two', <IconTwo/>], ['three ...
I created a custom directive that works well when the user enters a value. However, I'm facing an issue where the input field is not being rendered when the form is loaded. Below is my directive code: var cuitModule = angular.module('cuitModu ...
The return of console.log(this.sights) is an array containing 20 objects, each with properties such as name, photos, references, etc. My current goal is to iterate through these objects, displaying their names and photo_references. Here is how I am attempt ...
I would like to organize the data in the table below according to the values in the last row of a rowspan. https://i.sstatic.net/R9OBF.png Looking at the image, I am aiming to sort the table based on the "Cumulative hours" value. Here, I have implemented ...
Utilizing the react-dates library from Airbnb for date selection has been a bit challenging in conjunction with redux form. Upon clicking the select date button, the calendar interface appears. However, upon choosing a date, the input box remains empty ins ...
Currently, I am incorporating Bootstrap into my project and I am attempting to include a Twitter Bootstrap tab. I have already added jQuery and bootstrap-tabs.js to my project. Below is the script that I have added: <script> $('#myTab a&apos ...
Can anyone provide guidance on extracting a specific date format (date, month, day, year) from a timestamp? I am interested in implementing this feature within a view using Backbone JS. ...
I'm currently utilizing VueJS along with Stripe to create a form that can be submitted without needing to refresh the page. While the Stripe functionality is operational, the issue I'm facing doesn't seem to be directly related to Stripe. T ...
I have recently started developing a simple app in react native and I am facing an issue with the resizeMode property of ImageBackground. It seems that the resizeMode is not working when used within the stylesheet, however, it works fine when directly adde ...
For those familiar with working on iOS web applications, it's known that Apple's policy causes Chrome and other mobile browsers on iOS to use an outdated javascript engine. Because of this, we need to disable certain rendering for Chrome and othe ...