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Challenge #187: Generate Prime Numbers

RobertOdera
12 - Quasar
 
Baamruth
5 - Atom

Hi, Here's my solution, which is i think more efficient in terms of space and time complexity. Because it generates less rows compared to append fields or generating all the dividends. It is able to generate not only 0-50 but more than that, efficiently. It can generate prime numbers from 0-10000 by 1 second. 

danicahui
8 - Asteroid
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Challenge 187 2020-03-10.jpg
Amin
8 - Asteroid
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I love this challenge.. But definitely can be optimised.. I can already hear a whirring sound when I tested for up to 9999. 😛

 

187_Amin.PNG
codeRX
5 - Atom

My solution attempts to be efficient with O(n log n). I avoided the append tool because on a bigger scale, if used, performance will be O(n^2) because it would generate n x n rows, more than is necessary to solve this.

 

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Challenge_187.JPG

Generating the numbers from 2 to n is just O(n) and seems unavoidable.
But the second generate rows tool creates the minimal number of divisors to figure this out.

tonyadam
8 - Asteroid

Math challenges are always fun 🙂

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tonyadam_0-1585441602158.png

 

atcodedog05
18 - Pollux

On a spree to binge complete weekly challenges
Adrenaline rush

 

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This is my solution

atcodedog05_0-1585942819555.png

 

dpencheva
8 - Asteroid

Here is my solution. ; )

AndrewS
11 - Bolide

#187

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187.PNG
JennyMartin
9 - Comet
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AWC187.PNG

Looking forward to seeing the different ways people solved this problem!