All Questions
1,344 questions
1
vote
2
answers
150
views
How to detect whether each element of a list of element-nodes does feature a specific css-class name?
Given the following test environment ...
const nodeList = document.querySelectorAll('p');
const testArray = Array.from(nodeList);
testArray.every(function (elmNode) {
if (elmNode.classList....
- 29
0
votes
2
answers
97
views
How to check whether an array contains multiple values of a string of whitespace separated values?
Using an Angular application which inserts 'ng-star-inserted' to every node element. I need to check if the target element class exists inside array
var footerElementClassList = [
'footer-...
- 3,743
2
votes
2
answers
170
views
Is there a way to search an array of arrays for matching properties and if they match, make sure they aren't in adjacent positions?
I have been wracking my brain for a week on this problem and would appreciate any help or suggestions. I have a form that collects the users first name, last name and song. It stores those values in ...
- 21
1
vote
1
answer
153
views
How do I conditionally deep merge objects in JavaScript with multiple keys
The project I am working on is a trilingual dictionary. I have a database of words, and each word contains (among other things) an array of spelling variations and an array of objects representing ...
- 424
0
votes
4
answers
121
views
Create an array using item from different array
I need to create a new array of objects with 12 item (months & value) on it but it must check if the month exist on other array. If it exist it will push onto the array if not it will have a value ...
- 39
1
vote
2
answers
75
views
Most efficient way to sort an object based on value with a special rule
I have a situation where I want to create an array based on values (numbers) in an object like so. However, the catch is that if there is ever multiple keys with the same value, then I want the ...
3
votes
8
answers
238
views
How to iterate the sequence of pulling array items from middle (eg:[0,1,2,3,4,5,6,7] -> 4 3 5 2 6 1 7 0) without generating the sequence number array?
For example, when pulling items from the middle of the array : [0,1,2,3,4,5,6,7] (length is 8)
const arr=[0,1,2,3,4,5,6,7];
while(arr.length>0){
document.write(arr.splice(arr.length/2,1)+" ");...
0
votes
0
answers
41
views
Binary search comprehension problem. how can a '<' / '>' symbol be checking for strings?
My code works OK. The problem here is comprehension. I get that it splits and goes back and forward in the search.
What I don't get is how to give a descriptive explanation on what each code line is ...
3
votes
1
answer
141
views
Js Equal Distribution Algorithm of Users in Groups
That given n users with v value divide the users into g groups, so that the value of the sum of the values of the users of each group is similar, the number of users per group must be equal to the ...
- 4,512
1
vote
2
answers
93
views
Initialize a two-dimensional array with the values shown in the table below
Initialize a two-dimensional array with the values shown in the table below
1 0 0 0 1 0 0 0 1 0
0 4 0 0 0 4 0 0 0 4
0 0 9 0 0 0 9 0 0 0
0 0 0 ...
0
votes
2
answers
62
views
cartesian combinations for component variants
Let's say I have an object specifying inputs for a button component, and the possible values of that input.
const buttonVariants = {
colorMode: ['on-dark','on-light'],
size: ['small','medium','...
- 39
3
votes
3
answers
129
views
Based on a condition, how to remove an item from the processed array and move it to another array?
I have two arrays in my react component as follows ...
const [Selected, setSelected] = React.useState([]);
const [NonSelected, setNonSelected] = React.useState([]);
const Tmp_Selected = [
{ "...
- 783
0
votes
0
answers
67
views
Seeking help for the time analysis of a potential optimization of merge sort
Wrote this potentially more optimized version of merge sort. The code can be found here: https://github.com/AntonM-248/CodingInterviewPractice/blob/main/IK_Coursework/SortingAlgorithms/mergeAcross.js. ...
- 25
8
votes
3
answers
585
views
Longest Repeating Subarray (With Overlapping)
Given an array of arbitrary numbers, I am looking to quickly [with time and space complexity lower than O(n²) at minimum, n = length of array] find the longest subarray (a contiguous segment of ...
- 326
-2
votes
1
answer
67
views
My random number sorting algorithm doesnt work
I'm creating this algorithm which is supposed to include numbers 1,2,3,4,5 in an equation which looks like this:
@ + ## + ∗ ∗ ∗ + &&&& + $$$$$
The symbols meaning that it could be any ...
- 9