This tag is for questions pertaining to random numbers, whether pseudo random or truly random.
4
votes
1answer
70 views
Simple chatbot written in Python
I wrote a simple chatbot in Python a while ago, and I'd like to know how it could be improved. Here's the code:
...
1
vote
2answers
57 views
Generating random numbers and decks of cards
So I have some code here:
First a simple random # generator and a array-choosing function:
...
1
vote
2answers
38 views
Function for getting strings consisting of random characters
I've made this function for to be used while testing.
...
5
votes
3answers
67 views
Statistical Analysis of X-Wing Game Dice
I was in a discussion about mechanics of the X-Wing miniatures game where we were discussing a couple of the ways to improve attacks and I put together this small C# console application to determine ...
2
votes
2answers
121 views
4
votes
1answer
56 views
Generate dictionary of points on n-sphere
This is a long-shot, but my question is to simply optimize this particular function in some code I have written:
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1
vote
1answer
36 views
Password validator using regular expressions
I wanted to learn some regex, but learning regex is super boring so I decided to write a password validator that will validate a password with regular expressions.
How it works:
You enter a ...
3
votes
1answer
33 views
Quicksort using uniform_int_distribution to select the pivot
I have not used C++ for a while. Could you please tell me if my usage of the <random> module is correct? I am not sure if I need to be creating a new instance ...
2
votes
3answers
129 views
Generic Roulette class
I'm looking for some improvements for my generic Roulette class. More information on how the class works is better described, here: https://en.m.wikipedia.org/wiki/Fitness_proportionate_selection
<...
0
votes
1answer
106 views
Random number generator in C#
I don't know if it is any good. I've never done this, thus, I noticed it is kinda slow.
Can you suggest improvements? I may use it in actual software in the future.
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0
votes
1answer
58 views
Python random number generator between 1 and 9
I created this code and it works fine, but I think it's ugly. Could you show me a better way to create a list of three different random numbers from 1 to 9?
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10
votes
7answers
1k views
Generate random binary arrays
I am fairly new to C++ programming and I, so far, love it. I just have been trying to make sure what I am doing is fast, unique, readable, and efficient. Is there anyway I can improve this code, or is ...
1
vote
1answer
37 views
Log collisions in generating unique random strings
I've created a small class to generate unique random strings. It works fine. I also want to log the collisions of the generated strings. I check if the generated string is in the array for uniquness:
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2
votes
1answer
45 views
Output stream-based pseudorandom number generator
I finished an output stream-based pseudorandom number generator, that works based on the current time and output data.
Here is the header's code (entrostream.hpp):
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3
votes
1answer
45 views
Find the largest area polygon built from a given list of vertices
This is a code that gets a list of polygon vertices, non ordered, and finds the order in which they should be arranged in order to create the polygon with the largest area.
There are two key elements ...
3
votes
1answer
45 views
A Blum Blum Shub pseudorandom RNG implementation in JavaScript
I made a Blum Blum Shub pseudorandom number generator implementation in JavaScript.
Blum Blum Shub (B.B.S.) is a pseudorandom number generator proposed in
1986 by Lenore Blum, Manuel Blum and ...
11
votes
7answers
2k views
French animal generator
I'm learning Python. I'm making a random animal generator, from 5 txt files. Each file is a list of words for respectively the specie of the animal, an adjective, an origin, and a bodypart with a ...
11
votes
1answer
912 views
Solving for Bananas
This code creates a problem for the user to solve (very simple problem) it will then check if the user has got it right and will say so.
...
5
votes
0answers
68 views
ASCII dungeon generator [closed]
I've written a simple ASCII dungeon generator. What are your thoughts on the code and coding style?
Algorithm:
Choose random point on "canvas" (two-dimensional array of chars with user defined size)...
2
votes
2answers
45 views
Random distribution in Ruby
Below is a Ruby implementation of a random statistical event, based on a hash with the actual observed counts of outcomes.
I'd be interested in feedback in particular on what techniques I might use ...
6
votes
2answers
143 views
4
votes
2answers
59 views
Cython: Weighted Random Choice
I have a Cython function the takes a list of weights/probabilities (double) and returns a random index into the list.
For example
...
4
votes
1answer
74 views
Comparing three data structures for dealing with probability distributions in Java
Introduction
Suppose you are given three elements \$a, b, c\$ with respective weights \$1, 1, 3\$. Now, a probability distribution data structures will return upon request \$a\$ with probability 20%, ...
9
votes
4answers
1k views
Create a list of random numbers with sum = n
I want to create a list of random integers in the range [0, 9], that sums up to 100 in Excel, using VBA. The list should be printed in a single column.
The routine I've written is as follows:
...
1
vote
2answers
154 views
Random iteration over an array using divide and conquer
I have created a utility class which allows random iteration over an array.
The idea is pretty much a divide and conquer approach.
...
2
votes
1answer
60 views
Galaxy generator
I'm currently working on a galaxy generator, and I was in need of getting the next that a random would use, for continuing the generation without using a blank generation (re-run previous generation).
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4
votes
1answer
67 views
Virtual Lotto Task
I had the task to write a Lotto simulator. My program works as follows:
To start, the user can type in 6 numbers.
Then the winning numbers are randomly chosen.
The program then shows the winning ...
4
votes
1answer
93 views
C++ template to randomly choose from N elements with uniform distribution
There is a nice algorithm to randomly choose an element from a list in a single pass:
Pass through the list keeping the element chosen so far (X) and the number of elements processed (N). When ...
4
votes
1answer
69 views
A little advanced mouse clicker in Bash for Linux
My today's goal was to create a little advanced mouse clicker in Bash for Linux powered by xdotool. This clicker implements 15 pixel random range in which it clicks ...
2
votes
1answer
112 views
csvshuf: a tool to shuffle CSV columns written in Python
Edit: After reading Gareth's answer I have pushed an updated version of the code to github.
I needed to shuffle cells from specific columns in several CSV files. One of the requirements was to be ...
2
votes
0answers
33 views
Generate sample of permuted sequences with non-repeating elements
I have a very long sequence of letters (>20000 elements long). I want to permute them so that I have another sequence using the same letters but in a different order but still with the property of no ...
3
votes
2answers
94 views
Assembling edges of a graph
I'm making a neural network that comprises five populations of feature-selective neurons and one population of non-selective neurons. Each neuron in this network receives connections from
c * f * ...
5
votes
3answers
96 views
Command line password generator
I built a random password generator in Java which is meant to be run from the command line. It accepts options for:
Length
Upper case letters
Lower case letters
Special characters
Numbers
The ...
-2
votes
3answers
127 views
Generating a very long random string of letters
I was trying to fill a file with about ten million random characters (a-z,A-Z,' '). To my surprise the code is extremely slow. I inserted this print ...
3
votes
2answers
75 views
Simple 'Evolution of Text' app
I'm a complete beginner to Python, and wanted to get some feedback on my first app. I tried to make a clone of the 'evolution of text' app found on the Using Python website.
Enter some text, and ...
5
votes
2answers
95 views
Monte Carlo simulation of amoeba population
I wrote a simple Python simulation to answer the "Amoeba" population question posed here:
A population of amoebas starts with 1. After 1 period that amoeba can divide into 1, 2, 3, or 0 (it can ...
1
vote
0answers
23 views
Password Entropy in Lazarus (Delphi-like)
My today's goal was to create a function, which would evaluate the entropy of a given string password. It's mostly about how random the password is.
This little code is based on the C# code from Jeff ...
1
vote
2answers
109 views
Select random row using PDO
What do you think of this way to generate a random number from the total rows in a table? I would like to create a page that random.php precisely generates a random ID and shows it.
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2
votes
0answers
57 views
PHP Lottery Simulator
I have a lottery simulator on my website that simulates you playing the lottery every week until your death and tells you how much you would have won or lost. It can take a custom number of balls and ...
3
votes
1answer
80 views
Sleeping barber problem in Erlang
I'm learning Erlang. It's my first time with a non-imperative programming language.
I've written a code and I want some thoughts about it:
Is my logic easy to understand?
Is my code idiomatic?
Is ...
2
votes
1answer
156 views
C# console roulette game
I made a C# console roulette game. Check it out and give opinions on how to improve or ideas for some other features? It's not finished yet so it has lots of room for improvement. I am very new so ...
3
votes
2answers
81 views
Cryptographically Secure Pin Generator using RNGCryptoServiceProvider
In my system I have a SMS authentication. Users input their user-id and get sent an SMS with a 5 digit pin number they input in a website to log in. The pin has a lifetime of a few minutes.
This pin ...
-1
votes
2answers
75 views
Maths quiz with difficulty levels and a score database
How can I make the saving to the dictionaries more efficient as well as making my overall code more efficient?
...
-2
votes
1answer
155 views
On Finding Coin Jams
The problem can be found here and is essentially asking us to generate J many numbers containing N many digits, where these digits have to be either 0 or 1. The catch is that the these numbers that we ...
6
votes
1answer
46 views
Randomly selecting an adjective and noun, combining them into a message
This is my first Rust program. I have previously written a lot of Python, and some C. I would like some advice on whether I am doing things idiomatically, and any improvements I could make! I also ...
5
votes
2answers
74 views
Determine playing card
I would like a code review on the coding I did for my assignment. The reason I have asked here is because my lecturer has no intention of going through (Don't ask me why, I asked before and he said no....
1
vote
3answers
120 views
3
votes
1answer
91 views
Generate 6 random numbers for lottery in PHP
This program generates 6 random numbers between 0 and 45 and the numbers cannot be reapeated. Can this code be improved?
...
3
votes
6answers
588 views
Creating an array of random numbers with no duplicates
I only need three random numbers within the range of 1-54 (deck of cards) and none of the three numbers can be a duplicate. I cannot use an ArrayList; I must use a ...
1
vote
1answer
32 views
Using semaphore in C
This is my first time using semaphores and I was wondering if I implemented them to the best of their abilities in my code....
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