All Questions
Tagged with arrayjavascript
24 questions
9votes
2answers
10kviews
How can I quickly find unique list items?
I use the loop-every-single-list-item approach to filter out unique elements in a given list, which tends to be very inefficient way as a list grow in size, or as function call frequency increases. ...
10votes
2answers
240views
Associating degrees with notes of scales
I have a JS file that creates an object with notes from a music scale when given a key (aka tonic/ note). The code works and does what I want it to do. I need a critique on the way it's written, what ...
- 149
23votes
3answers
141kviews
14votes
1answer
10kviews
Implement numbering scheme like A,B,C... AA,AB,... AAA..., similar to converting a number to radix26
I want to implement numbering scheme like Microsoft Word uses for numbering. first one gets = A,next is B, next is C, .... then AA, then AB,....and so on. as shown below ...
- 243
12votes
1answer
621views
Heaviest Stone algorithm time complexity
I implemented the heaviest stone algorithm, but I am not sure about its time complexity. I'm doing sort which is O(nlogn), but it' inside a while loop. Problem: We have a collection of stones, each ...
12votes
7answers
31kviews
Given an array of integers, return all pairs that add up to 100
I was recently given this programming challenge on an interview, and I decided to use javascript to solve it. I did, but I'm not happy with my implementation. I can't help thinking there must be a ...
- 223
10votes
4answers
2kviews
Algorithm for dividing a number into largest "power of two" buckets?
For example, these are expected outputs: 3: 2, 1 4: 4 5: 4, 1 6: 4, 2 7: 4, 2, 1 8: 8 9: 8, 1 ... 20: 16, 4 ... 25: 16, 8, 1 ... 36: 32, 4 ... 50: 32, 16, 2 Up to ...
7votes
5answers
4kviews
Find number repeated odd times in array
I completed the following exercise: You are given an array of repeating numbers. All numbers repeat in an even way, except for one. Find that odd occurring number. ...
- 171
5votes
1answer
4kviews
Interview Coding Test: Transaction Processing: Get balance by category in given period
I recently gave a coding test for a job which failed. It had two problems and one of them is shared in this question along with my solution. Problem: Get balance of all transactions in a given ...
- 175
4votes
1answer
173views
Improving a filter array function, to match elements and conditions
I have to do some check/match elements with conditions. A have a list of conditions, each with a specific ID. I've put for each of my elements an array with the ids of their respective affirmative ...
4votes
1answer
220views
Displaying Media with HTML and JavaScript
I have a personal website that I use to share videos and images with friends. Below is a media generator using JavaScript and HTML. Its main purpose is to display one image at a time at the click of a ...
user231248
4votes
3answers
25kviews
"Prev" / "Next" buttons for a circular list
I have an array of strings and on click of the "NEXT" button it displays the next array item in a <p> tag while on click of the "PREV" button it displays the ...
- 926
3votes
2answers
494views
Write a function to determine whether an array contains consecutive numbers for at least N numbers
I am trying to write a function to determine whether an array contains consecutive numbers for at least N numbers. For example, the input is [1,5,3,4] and ...
- 325
3votes
1answer
100views
3votes
1answer
163views
Train Travel Planner
I did an exercise of a train travel planner. But it seems like a lot of code to do a simple thing? Is there a better way of writing the JavaScript? Overview: The planner needs to be able to find ...
- 33
