This tag is for questions pertaining to random numbers, whether pseudo random or truly random.
5
votes
2answers
223 views
Mapping & Sorting Randomly Generated Numbers
Below is the assignment I was given and the coding is what I have came up with. I would appreciate criticism on how I did and on ways to have gone differently about it.
You want to number your ...
6
votes
1answer
285 views
Simple random generator
Based on this question, I have made a simple program to print a sequence of random numbers. The program seems to run fine, but I would like to know if my implementation is correct and how I can ...
4
votes
0answers
21 views
Coin flips and Dice rolls in a stored procedure
I saw a post in chat a few days ago, of what I thought was an interesting (albeit fairly simple) statistical challenge:
By @skiwi:
If I shoot once with 50% chance of target A and 50% of target B, ...
3
votes
2answers
94 views
14
votes
3answers
676 views
5
votes
2answers
90 views
7
votes
2answers
329 views
Three-number lottery simulator
Please let me know how I can make it better, especially with avoiding repetition without the need to replace the user guesses.
...
12
votes
3answers
651 views
Seed std::mt19937 from std::random_device
To fill you in: Many people seed their Mersenne Twister engines like this:
std::mt19937 rng(std::random_device{}());
However, this only provides a single ...
5
votes
2answers
51 views
Summing random numbers in parallel
I am playing around with parallelization in Java and am trying to see how to squeeze out more performance on my multi-core box. My machine has 6 physical cores, 12 with hyperthreading.
However, with ...
5
votes
2answers
210 views
Random Engine - follow up
I have ported the code from my previous question "Generate a random numbers class" to C++14 and made a few modifications.
How can I improve it further?
...
7
votes
1answer
71 views
Random number generator initialisation
For a server-side Java application I want to have a random number generator. I'm using the ISAAC algorithm from Apache Commons Math 3 because it is both cryptographically strong and fast. I have ...
6
votes
3answers
192 views
Generate valid random rgb color strings
I'd want to see if is possible to optimize performance even further of the following generate color method.
...
4
votes
3answers
517 views
1
vote
0answers
49 views
5
votes
2answers
204 views
Basic random password generator
I'm trying to pick up some Haskell skills so thought I'd write a random password generator to get to grips with using IO. It was far trickier than I expected and I ...
5
votes
3answers
92 views
Python Turtle screen saver
Leon asked a question which got closed both here and at Stack Overflow, but I kind of liked the idea, so I implemented a working version of his code, which I now want reviewed.
With regards to Leon's ...
4
votes
1answer
291 views
Java Dice Roller with GUI
Three days ago I wrote about a Java Dice Roller I wrote. I've now added a GUI to that program. Here it is:
DiceRollerGUI.java:
...
5
votes
2answers
648 views
Java Dice Roller
I've written a basic dice program in Java which takes a number of faces then randomly selects a number within that boundary. Here is the code:
...
0
votes
1answer
52 views
Procedural generation of an infinite map made up of 1's and 0's
This is my function to procedural generate an infinite random map of 1's and 0's it only calculates what you can see at the time and when the view moves it calculates the next rows.
Complexity is the ...
5
votes
1answer
47 views
Fill a container from several threads
I want to generate some random data and store it in a container. I split the container into disjoint intervals using iterators and pass them to a thread function (I hope its body isn't important ...
11
votes
1answer
307 views
Balanced Random Assignment in Python
It has been a very long time since I've used Python.
What I'm looking for: I would like to create a 6-by-6 random matrix where each component is either 1 or 2, so that there are 18 ones and 18 twos.
...
5
votes
2answers
83 views
Fluent API for creating random integer arrays in Java
Now I have this fluent API for creating random integer arrays. I can say that I want an array of particular length, having a particular minimum/maximum values and using a particular (or default) ...
4
votes
0answers
91 views
Better rand() API
I use this document as a basis for my mini-library:
Motivation
The std::rand friends are discouraged in C++14, so we want:
A direct replacement to ...
2
votes
2answers
278 views
Simple stream cipher encryption/decryption function
This is a Python implementation of a stream cipher encryption algorithm. This implementation originates from the one displayed on the TI-Basic wikidot cryptography page.
I am well aware that this ...
12
votes
3answers
132 views
Weighted Probabilities with Integers for Game
The idea here is to pick a skill at random for the player each round. Four skills will be chosen, they are all random, and the same skill can repeat multiple times.
The player has a skill level for ...
4
votes
0answers
152 views
Bean Machine Simulation
I could not find a solution from my book's website (student-level access) but I feel that I am missing something that I'm supposed to learn from this exercise.
Instructions: Balls are dropped from ...
10
votes
5answers
923 views
Generating a password to save to a .txt file
Here is my basic password generator which saves your password to a .txt file which you can choose the name of etc.
...
6
votes
3answers
930 views
Random number generation seeding in C++
I wrote a small function to return a random in a given range:
...
4
votes
2answers
95 views
Lorem ipsum chat bot
I'm a web development student, and I made a chat bot that emulates an SMS app commonly found on smartphones, etc. It responds with random lorem ipsum text. I'm wondering if my functions are too long ...
3
votes
1answer
48 views
Implement selection from array by 'random' or 'if/elif conditionals'
I'm working on some code examples in 'Automate the boring stuff in python...' to prepare for my first year of CS. I want to know if its better to use an array with random selection below or rather ...
7
votes
1answer
71 views
Small text-based RPG (v2)
This is my first text-based game I made. It's very small because I just learned Python and wanted to start small, and then code bigger programs. I added some stuff since the last time. Please give ...
5
votes
3answers
171 views
Small text-based RPG
This is my first text-based game I made. It's very small because I just learned Python and wanted to start small and then code bigger programs. Please comment on this.
...
8
votes
2answers
1k views
Guess a random number between 1 and 100
I want some recommendations or something I could add to the game. Please tell me what I could do better or what I did wrong. I made this during the time I learned Python.
...
8
votes
2answers
1k views
Text based fight game
I learned code about a week ago and I wanna hear some recommendations and stuff I could add to my code. This is a fight system I made for my text based game. Please tell me what I could do better.
...
6
votes
1answer
115 views
Generating 3D voxel terrain with Perlin Noise
I've created this simple 3D voxel terrain generator using Perlin Noise. I have a few concerns about it though.
Is there any way to make it more performant? It currently takes ~1.5 seconds to ...
5
votes
3answers
114 views
Guess the bigger number out of two random integers
I want to make my code more efficient by instead of repeating my code again for level two, as the only change from level one to level two is the random numbers change from ...
1
vote
1answer
89 views
Brute-force word cracking program using /dev/urandom
I've been having fun with this program and trying to use different methods and such to achieve the fastest possible word cracking program I can come up with. I'm pretty happy with my current program ...
4
votes
1answer
98 views
Using random to generate strings
I have code that reads from files of surnames, female and male names and randomly generates a name in the following format: lastname, male/female name.
The files are in the following format:
...
5
votes
2answers
248 views
Math quiz for teachers & students
I have been programming a maths quiz that can be used for teachers and I have have been trying to make the code as short as possible so it is easier to understand.
If there is any way I could make it ...
7
votes
3answers
334 views
8
votes
1answer
83 views
Poker probabilities finder
This code finds the probabilities of the various scores in Poker. It uses a Monte Carlo approach, in which, two million (\$2 \times 10^{6}\$) hands are simulated and evaluated, not an exhaustive ...
6
votes
2answers
207 views
Russian Roulette in Java using JFrame
A while ago I got bored and being the beginner programmer I am I made a Russian Roulette game in Java using JFrame. The first few windows are JOptionPanes that are a welcoming screen, an update log ...
2
votes
1answer
260 views
Bogosort vs bogobogosort [closed]
A question on Stack Overflow had me look up the article on bogosort on Wikipedia.
There they describe the bogosort algorithm and the bogobogosort algorithm. They say, about this last algorithm, that:
...
5
votes
2answers
368 views
Alien Name Generator (using blocks of consonants and vowels)
This is my first script in Python, and I am looking for tips and constructive criticism about code style, whether there are more efficient ways of doing things, etc. (not as interested in tips about ...
10
votes
3answers
856 views
App for generating passwords
I wrote a simple JS app to generate passwords. I read up on some of the commenting standards for JS, and started reading the book Clean Code. I am not sure if I am writing the ...
8
votes
4answers
141 views
Buffon's Needle experiment
I was working on a program that simulates the Buffon's Needle experiment. If anyone is not familiar with it, a Wiki link is provided - Buffons's Needle
The point of Buffon's experiment is to find ...
7
votes
4answers
221 views
Matrix struct with random values allocation and deallocation
I've written this code in 2013 or 2014, I think. I've rediscovered it today in one of my folders, made some changes and now I'm left (and my 2013/2014 me as well) wondering how good it looks for other ...
1
vote
2answers
353 views
Lotto/lucky draw
The following script draws 6 numbers at random.
I input another 6 numbers and compare with random numbers generated, if they're the same, you win.
...
1
vote
4answers
210 views
Generating random numbers from thread timing in C++
I have the following code blocks that generate apparently random numbers by using thread timing variations.
I am looking for a general code review, and a specific focus on whether the results are ...
7
votes
2answers
249 views
Random value excluding both limits
The javascript method Math.random() returns a (pseudo-)random float between 0 (inclusive) and 1 (exclusive).
In some use cases, I need both limits to be excluded, ...
