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Questions tagged [random]

This tag is for questions pertaining to random numbers, whether pseudo random or truly random.

3
votes
1answer
84 views

Generating Biased Random Values (Walker's Alias Method)

Am simply wondering if I made any egregious mistakes while implementing the Alias Method as an IEnumerator<TElement>; would also like to know if there are any ...
0
votes
0answers
41 views

Fill /dev/random via Bitcoin exchange value [closed]

I have written the following random numbers generator. I would like to know how safe this is and if it is suitable for use in computer engineering. For me, the result looks very random, but would like ...
2
votes
1answer
32 views

Simple command-line roulette game

I developed a simple command-line roulette game. Your only options are betting on color, but you can bet multiple times in one round ...
6
votes
1answer
73 views

Qt Number Generator v2

Link to the old question. I tried to learn some new things from the answers and here's what I did: Used Qt Designer so that in Config.h, all member variables and ...
5
votes
3answers
123 views

Python coin flipper

I know this is the simplest code that you have probably ever seen but its the first thing I've ever made. Any ideas on how to improve it or add new functions to it? ...
2
votes
1answer
53 views

Speed up fast poisson disk sampling generator in Python

I wrote a generator class which implements Fast Poisson Disk Sampling algorithm in Python. I did some optimizations like, x ** 2 -> x * x, using unpacking ...
1
vote
1answer
43 views

Advanced love calculator that generates a result based on the similarities between the two names

My love calculator gives a result from 0 to 100% based on these factors: If the first letters of the names are the same. If the number of vowels is the same. If the length of the name is the same. If ...
6
votes
2answers
77 views

Quantum random number generator

I'm working on a Quantum Random Number Generator and wanted to get some feedback on the project so far. I'm using PyQuil to generate machine code for the quantum computer, first to create a bell ...
3
votes
2answers
66 views

Number guessing game in C

This is just a little number guessing game. I know it's simple but I am a newbie in C and I think such a little example can be enough for finding simple design flaws that can than be eliminated. If ...
3
votes
1answer
57 views

Generating random number from a binomial distribution

In my application of Monte Carlo simulation, the crucial part is to generate a random number from a binomial distribution with parameters n = size and p = 0.5. Here is my current implementation ...
5
votes
1answer
34 views

High performance wrapper for CSPRNG arc4random(3)

This function is a wrapper for arc4random(3), a cryptographic pseudo-random number generator on macOS and BSDs, but you can also get it by installing ...
2
votes
0answers
39 views

Password Generation Using Cryptographically Strong Random Number Generation

My goal in creating this project was to create a password generator that was simple enough to be useful as well as sophisticated enough in its random-number generator so as to not be contrived. I ...
1
vote
3answers
139 views

Randomly pick key from dictionary weighted by the keys value

I was trying to write a function that would get a random card from a dictionary of cards in a players deck weighted by the number of cards of each type you have. I don't know if the solution I came up ...
1
vote
1answer
38 views

Random String Generation module in Python

The module is for facilitating random string generation. The example I use to explain it is the following: Instead of writing ...
1
vote
1answer
78 views

Vectorized N-Dimensional Random Walk in Cartesian Coordinates

I have written a random-walk routine that I hope to build upon in the future. Before doing so, I was hoping to get some critique. I believe the implementation is correct. I noticed that many other ...
2
votes
1answer
53 views

Incrementing time in a discrete-event simulation of a supermarket queue

A method has been written that increments time in minutes that simulates how much time it takes to process item in a supermarket queue and if there is an empty queue, skip it and loops around to find ...
4
votes
3answers
118 views

Uniformly generate a number from 0 to n-1 that isn't on a blacklist

The task: Given an integer n and a list of integers l, write a function that randomly generates a number from 0 to n-1 that isn't in l (uniform). Solution 1: ...
2
votes
0answers
35 views

Quiz for random boolean expressions

Inspired by the various quiz programs on this site, as well as Simon Tatham's puzzle collection, I thought I'd write a quiz that constructs its questions automatically and randomly. A typical session ...
5
votes
2answers
348 views

Counting consecutive selections of a given number when sampling integers in a range

This script counts consecutive number strikes of a number that you determine in a number-sequence that you also determine. I would be very pleased if this script can be reviewed in terms of ...
1
vote
2answers
86 views

Python password generator

This is considered as my second python project, I made the password generator where user has to input length of password minimum 5. I made the code that it will guarantee at least one lowers case, ...
3
votes
1answer
59 views

Token generation system in py3.7

I've created a system to generate tokens that could potentially be used in some sort of program: ...
0
votes
1answer
58 views

Probability suite for an array of elements

I wrote a function that can be used to generate a probability distribution for an array of elements (probGen()), and another that can be used to select an element ...
2
votes
2answers
71 views

Return Set<Integer> with random unique Integer numbers between min and max range

I need set of random unique Integer numbers for my unit test. I implemented this method, however I'm not sure if this is best way to implement this. ...
1
vote
0answers
30 views

Moderate return-low risk vs high returns-high risk investments

To quantify Buffet's #1 rule of investing, "Don't lose money", I take the assumption that % returns of an investment follow a Normal distribution. Now a high return high risk investment might follow ...
0
votes
1answer
22 views

Assigning zero to random cells in a pandas.DataFrame

I am trying to assign 0 to random cells in a one dimensional pandas.DataFrame. The below code is the best way I could think of ...
2
votes
1answer
87 views

Filling up a hand with random cards that are not yet drawn - Monte Carlo

I would like to know if there is a more efficient way to speed up below code. This function is meant to fill in a set of poker hand with the remaining cards using Mersenne Twister for a Monte Carlo ...
4
votes
2answers
844 views

Bulls and Cows C++ beginner project

I'm not a beginner programmer as I have experience in Node and Ruby, but I'm a beginner when it comes to C++. And as C++ is quite different from these two, I figured I could use any tips, tricks, ...
3
votes
3answers
82 views

Pseudo-truly random number generator

I am creating what strives to be a truly random number generator. As of right now, the implementation uses a mix of mainly nonsense system data and some pseudo-random numbers to generate numbers that ...
9
votes
6answers
3k views

A dice game called “Greed”

This game is a variation of the Greed dice game. Imagine we have 5 dice. We roll, them, and jot down the results. Then, based on this chart: ...
3
votes
1answer
121 views

Orthogonal sampling

I have been staring at what I have produced for almost 5 hours and I still cannot see how and where to improve my implementation. I am implementing an Orthogonal sampling method according to the ...
2
votes
4answers
505 views

Password generator in Python 3.7

I am learning how to code in Python by myself and have never coded before, I just want to know if there is any way I can upgrade my PasswordGenerator. ...
2
votes
2answers
59 views

New password generation

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3
votes
1answer
87 views

Small fast pseudorandom number generator in C++

I've been away from C++ for some time and I'd like to get back up to speed with modern practices, so I implemented a small random number generator described here. Any advice on this piece of code? <...
5
votes
10answers
6k views

Random alphanumeric password generator with GOTOs

I was inspired after this thread on Stack Overflow to create a random 8 character alphanumeric password generator. Sadly, it is closed, so I cannot provide an answer there. Anyway, here is the code. ...
1
vote
1answer
39 views

Implementing a random distribution satisfying RandomNumberDistribution concept

Improving on this code review, I provide logarithmic_distribution to satisfy the C++ RandomNumberDistribution concept implementing the PDF ...
2
votes
1answer
198 views

Random string generation in Java

Can random string generation be faster in Java? Here is my current code ...
1
vote
0answers
119 views

Simple joke guessing game

Based on the many other number guessing games people tend to post as first questions, https://www.xkcd.com/221/, and a crypto class I'm taking, I've decided to implement a number guessing game using ...
4
votes
1answer
98 views

Generate multi dimensional maze with borders and fixed degree on each node type

IMPORTANT: giving too big combination of node count and edge/neighbor count can overflow your RAM and swap file very quickly, thus I recommend staying below 500 on node count and below 50 on neighbor ...
3
votes
1answer
144 views

Good randomness in Python code for a lottery-like game

I'm trying to build a lottery-like game in Python 3.6 where a function selects a winner from a participant list where every participant has a winning chance weighted by the value of the tickets they ...
1
vote
2answers
482 views

Secure random password generator

I am developing an application that must generate a random password for each new user in the system (initial password). My idea is to use passwords of 16 characters long. Would like to know if the ...
1
vote
2answers
341 views

Matching socks from a bag of socks

I was reading the book Algortihms to Live By and was inspired by it to take a shot at simulating How to pair socks from a pile? (sans the efficiently part at the moment). ...
0
votes
2answers
83 views

Randomly select + place an image within a div

I'm working on a proof of concept idea I want to use in a Brutalist styled web page. This would involve having transparent image being placed randomly behind the content on load, I have this working ...
5
votes
2answers
188 views

Random tone generator using Web Audio API

This is a random frequency audio generator made with the Web Audio API by Mozilla. The end-goal is an audio frequency trainer: the website plays an audio frequency and the user tries to guess which ...
6
votes
0answers
80 views

Metropolis Monte Carlo Sampler in Rust

the following is an implementation of the standard Metropolis Hastings Monte Carlo sampler. You can read more about it here. At the end I am going to give you a link to the Rust playground, so you ...
6
votes
2answers
759 views

Pick a random file from a directory tree

I'm working on a python module to randomly choose a wallpaper for my desktop background among thousands of pictures in my photo library. I though I'd make a general function: ...
1
vote
2answers
77 views

Three functions to select a random character, each of which can be used at most twice

I'm attempting to minimise the "duplicate" functions I have defined which do almost the exact same thing, but I'm unsure of the best way to do it, I thought of passing in the type I'm looking for (e.g....
1
vote
2answers
93 views

Lottery in the command line

I have written a game in which the user has to guess six numbers between 1 and 49. I want that my program gets checked in the following criteria: Does this program meet the requirements of object-...
6
votes
2answers
214 views

Random quote rotator

On my website, I created like this banner that rotates quotes from an array I made. ...
5
votes
3answers
798 views

Function for creating unique strings for urls

I wrote this function in order to create unique url's for my site. Using these urls, visitors could demo site functionality without having to create a login. The function was intended to return a ...
7
votes
3answers
1k views

Generating a unique key

I am coming from a Ruby background and I am learning Python. This is a method I've created to generate a URL safe unique key: ...