All Questions
Tagged with mathematics javascript
42 questions
4
votes
3
answers
184
views
Efficiently generate a random position inside an outer rectangle but outside an inner rectangle
It should be a uniform distribution (ie: every point is equally as likely). I also don't want to use the simple solution of: "in a loop check to see if the current generated point is within the ...
- 223
-1
votes
1
answer
99
views
Sine function guessing cognitive app
Please help with improving this application. It is a guessing game, for learning the values of the sine function, and boosting brain power in the process.
...
- 411
2
votes
1
answer
155
views
Combinations of elements in array
I wrote this code to get all possible arrangements for an array containing 3 elements:
...
- 59
3
votes
0
answers
97
views
Speed up a JavaScript function for inverting matrices using Gauss elimination
I wrote this function and I'm interested if it can be sped up by improving the code.
The function accepts either column major 1D array or 2D row major array.
Maybe there are some obvious JS tricks ...
- 31
2
votes
0
answers
171
views
JavaScript functions to generate Pythagorean triples
I am sure you know what Pythagorean triples are, in the extremely unlikely case that you don't know:
A Pythagorean triple consists of three positive integers a, b, and c, such that $$a^2 + b^2 = c^2$$...
- 3,684
3
votes
2
answers
357
views
Intersection of 2D vector equation straight lines
I know the vectors that describe two perpendicular lines, $$\mathbf{a} + \lambda\mathbf{d}$$ and $$\mathbf{b} + \mu\mathbf{d'}$$
I've written a JavaScript function to get the coordinates of the point ...
user98809
3
votes
1
answer
985
views
Convert number from old range to new numeric range
I have a function that takes a specific number and a range, and re-scales it to the corresponding number in a different range.
...
- 133
4
votes
2
answers
500
views
find closest distance between two numbers (looking for improvement)
Let's say I have a number set like below
// 1,2,3,4,5,6,7,8
Now I want to go from 2 to 5. ...
- 143
3
votes
0
answers
329
views
converting from byte arrays to strings of integers, and back
I have this code to go from an array of bytes (arbitrarily long) to a "bigint" string (really, an arbitrarily long string composed of integers 0-9), and go from that long integer string into ...
- 321
0
votes
3
answers
1k
views
3
votes
1
answer
71
views
Collect distances from 1 point to all others in a graph
Problem:
I have a weighted graph. I want to get distance from definite point to all other points in the graph.(and then get path to them)
I used modified dijkstra algorithm
So, here is code:
...
3
votes
1
answer
377
views
I need help optimizing a function that returns all divisors
This is my code:
export function all_divisors(num: number): number[] {
return range(1, num+1).filter(i => num % i === 0).toArray();
}
the ...
- 151
2
votes
0
answers
447
views
Code is timeout - Hamming Number
I have a problem with my code, because his is required a long time to be done(only when I put big numbers like 2000)...
I am trying to do the Hamming Numbers kata on codewars.com:
A Hamming number is ...
9
votes
1
answer
1k
views
Convert Decimal to Fraction
This code below converts number from decimal to fraction. I don't know if there's a better way or better methods to do this job so any advice would be appreciated.
...
- 185
6
votes
2
answers
208
views
Find the best matching combination of numbers
I need to manipulate chunks quantity until total will be as close as possible to the ...
- 61