All Questions
19 questions
1
vote
0
answers
97
views
Nodejs Websocket pulling new data from InfluxDB
I have a nodejs server with websocket which is pulling the new data from InfluxDB and send it to client.
The piece of code is this:
...
- 111
2
votes
2
answers
118
views
Find differences between two arrays
I have to identify added and deleted items between two objects with the same structure.
...
3
votes
1
answer
212
views
Update user's experience points
I have a private method in my class to update user experience.
First of all, I create giveExp based on contentLength (...
- 133
2
votes
2
answers
119
views
Javascript/Node: Reducing a sorted array of pairs such that the values corresponding to the same key are summed
System/Language: I'm using plain Javascript to write this algorithm. Environment: Node 17.4.0 with a system that has ~7000 MiB of Memory and ~400GB of Storage.
Input Data
An (...
- 123
3
votes
2
answers
76
views
Javascript best way to filter out empty values and simplify reusable function
Hello I have this function that takes array of objects and takes a specific value from the object and creates array of strings that can make mapped to dropdown selector.
...
- 191
2
votes
2
answers
1k
views
Generate all possible unique combinations of positive numbers these have sum equal to N
This is my function to generate all possible unique combinations of positive numbers these have sum equal to N.
For example:
If the input is 4
The output should ...
- 315
1
vote
2
answers
1k
views
Calculate transaction balances and find duplicate transactions
In an interview I was asked to solve two JavaScript questions. I thought I did pretty well because I:
Covered the edge cases
Wrote comprehensive tests
Documented the code using jsdoc
The interviewer ...
- 127
4
votes
0
answers
345
views
JavaScript AVL Tree
I have been working through Introduction to Algorithms 3rd Edition, and have implemented an AVL tree through prototypal inheritance. The code presented here does work as expected based on the tests ...
- 1,255
6
votes
2
answers
446
views
Selection Sort Algorithm (Node.js)
I wanted to implement a selection sort and wanted to make sure that I'm doing it correctly. I wanted to do it in a way that's efficient and use recursion. Please let me know if I am doing this ...
5
votes
2
answers
2k
views
Hackerrank.com - Sherlock and Anagrams
Summary: Given a string find the number of anagramic pairs of substrings of it. e.g 'abba' pairs are [a,a],[b,b],[ab,ba],[abb,bba] so we have 4 pairs.
I'm wondering if anyone can help me improve my ...
- 153
2
votes
0
answers
51
views
Flatten Hierarchical Categories
I have an XLSX file that contains a hierarchical list of categories. Each category has a basic query associated with it. I need to flatten these categories which involves combining the categories. I ...
- 181
1
vote
1
answer
2k
views
code to check if number is prime number
I have written a code to check if the number is prime number are not.
I pass the number from command line argument, and check if the number is prime.
I have written a function for it which returns ...
- 633
2
votes
2
answers
3k
views
Add new number to sorted array of numbers
The task is to add a new number in the array of numbers sorted in ascending order.
So let's say the array is:
20,40,50,60
And the number to be inserted is 24,
...
- 633
8
votes
1
answer
351
views
Sieve of Eratosthenes performance; Scala very slow compared to Node.js
I am new to Scala so it might show. I am learning it for one of my classes and have to write a performance benchmark. I have written the Sieve of Eratosthenes in both Node.js and Scala, and my Node.js ...
- 384
1
vote
2
answers
97
views
Find unique range numbers
im using the following code which is working.
The code provide range of random values but unique one i.e. it doesn't return the same values until the full range was provided ,what do you think and ...
- 123