Questions tagged [simulation]
Simulation is the imitation of some real thing, state of affairs, or process. The act of simulating something generally entails representing certain key characteristics or behaviours of a selected physical or abstract system.
364
questions
43
votes
5
answers
40k
views
Designing a coffee machine
I was recently rejected from what looked like a really promising string of interviews. I did very well in a questionnaire style review, and then they handed me this assignment (more or less):
...
- 541
33
votes
9
answers
7k
views
Simple n-body class in C++
As part of my training, I implemented a n-body class in C++ to simulate gravitational interaction of bodies and to get more familiar with features that C++ offers such as object oriented programming.
...
- 1,125
24
votes
4
answers
11k
views
Simple Turing machine simulator
Yesterday I got a sudden urge to go from writing Python to something, well, more UNIX core-ish. I read some examples on here and decided I might as well put some of that stuff to use to test something ...
- 381
23
votes
5
answers
2k
views
Benchmarks of various scientific programming languages for theoretical modelling
For a theoretical modelling course for biology students, I am trying to decide which would be the best technical programming language for doing evolutionary simulations in terms of elegance and ...
- 283
22
votes
4
answers
7k
views
C++ Coin flip simulator and data collector
Asks the user for the chance of a coin landing on heads, the number of trials per experiment, and the number of experiments. For example, given 5 trials per experiment and 20 experiments, the program ...
- 323
21
votes
2
answers
6k
views
Barnes-Hut N-body simulator
I have written an n-body simulator, implementing the Barnes-Hut algorithm. Please comment on anything you can see wrong with this.
Wikipedia Barnes-Hut page
This is a screen shot of the simulation 20 ...
- 411
19
votes
6
answers
6k
views
Premier League simulation
I've created a simulator for the Premier League, which takes in all of the 20 teams and plays them against each other, recording the results and outputting a table at the end.
The skill levels are ...
- 349
19
votes
4
answers
468
views
Ising Model - Atom Vibration Simulation in Scala
I am an experienced Java developer (12+ years) and have recently switched to Scala and I love it. However I feel not comfy yet and I have a feeling that I might use to many paradigms from the good old ...
- 393
18
votes
3
answers
4k
views
Simulating a two-body collision problem to find digits of Pi
I came across a nice video on 3Blue1Brown's channel that highlights a very indirect way to find the digits in Pi. I'd suggest watching the whole video, but briefly:
The setup is as above. A "small" ...
- 283
18
votes
1
answer
1k
views
Fluid Simulation with SDL
I have always wanted to write a fluid simulation, and with the help of a paper and some StackOverflow users I've got something that works. My goal is to have a program that someone can run right away ...
- 1,016
17
votes
5
answers
50k
views
17
votes
3
answers
277
views
"Do I understand the gravity of the situation?"
What is this?
This is a two-dimensional physics simulator that models gravity and collisions between circular objects (though it doesn't model rotation).
How do you use it?
You can tweak the following ...
- 1,308
16
votes
3
answers
2k
views
Newton-Pepys, common birthdays and other probability simulations in Python 3
I have been learning Probability from Statistics 110 and trying to simulate problems that have an unintuitive answer
...
- 323
16
votes
3
answers
1k
views
Razzle Dazzle simulator
Inspired by the video from Scam Nation and James Grime from Numberphile, I tried to make a Razzle Dazzle simulator.
Razzle Dazzle is a scam in the form of a game. Per turn, the player pays a fee and ...
- 201
15
votes
3
answers
5k
views
Orbital Trajectory simulator
I have written a simple program to do trajectory simulation in the Earth-Moon system, it still has a long way to go I am working on making it more class oriented and am looking into implementing a ...
- 449
14
votes
7
answers
5k
views
Monty Hall Paradox in Java
I was wondering if this code looks neat, and if I should change anything. I was planning to implement Frames (or JFrame) tomorrow on it. Would it be a good idea to ...
- 263
14
votes
3
answers
628
views
Suggestions needed after modification of Simulation of an Ocean
After suggestions given in this question, modifications to the code has been done.
Only thing I could not do is to decide, where to place the starveTime property (...
- 3,321
13
votes
4
answers
4k
views
Simulating a printer
I'm trying to recreate a printer in Java. I'm fairly new to programming so I'm using huge if/else blocks inside a single ...
- 129
13
votes
3
answers
17k
views
Enigma simulator performance
Here is my implementation of a simple 3 rotor Enigma machine in C++:
...
- 245
13
votes
1
answer
1k
views
Haskell Particle Simulation
I recently started learning Haskell and as my first project I decided to port a particle simulation I had written in C.
The simulation is pretty simple. We have a cubic box with particles (spheres) ...
- 253
13
votes
1
answer
326
views
Population dynamic simulation on biological information maintenance 2
This question is the follow-up to this previous question.
Background
Using this simulation I investigate a system in which enzymes proliferate in cells. During the replications of enzymes, ...
- 325
12
votes
6
answers
19k
views
Write a program that simulates a lottery
I am taking a C++ course and we have received our final assignment, I was looking for some suggestions and or tips so I can continue to improve.
I am aware that the use of ...
- 305
12
votes
2
answers
1k
views
Gravitational Brute Force N-body Algorithm
I've just started dabbling with code, and as a learning exercise I've written a simple algorithm for solving gravitational n-body problems numerically in JavaScript.
I would be very grateful for ...
- 297
12
votes
2
answers
335
views
How Long Will Your Smartphone Distract You From Family Dinner?
I wrote a program to simulate this week's 538 Riddler, reproduced below:
You’ve just finished unwrapping your holiday presents. You and your
sister got brand-new smartphones, opening them at the ...
- 256
12
votes
1
answer
4k
views
Predator-prey simulation
I made a random-walk predator-prey simulation that focuses on individual animals instead of the (maybe) more common array-based approach. I'd like to hear your opinion about this: how could the ...
- 405
12
votes
1
answer
1k
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 ...
- 27.4k
11
votes
4
answers
4k
views
Doodlebug vs. ant population simulation
I am looking for a review on one of my homework assignments for this semester.
This homework has already been submitted and graded and my final has already been submitted so there is no cheating or ...
- 589
11
votes
3
answers
1k
views
Souped-up random walk terrain generator
I started learning Python a couple of weeks ago, and to test my new knowledge of Python, I decided to use Pygame to code a random walk terrain generator.
...
- 15.8k
11
votes
2
answers
22k
views
Dice-rolling simulator
I know there is a better way to store data. What is the most concise way to simplify this script?
...
- 121
11
votes
5
answers
1k
views
Probabilistic matchmaking simulation
The following is a problem I found on this wiki. What can I do to optimize my algorithm, and make this code more C++11?
Write a program to discover the answer to this puzzle:"Let's say men
and ...
- 2,629
11
votes
2
answers
2k
views
Monte Carlo virus infection simulation
I am learning C++ from a C background, and I was wondering if I could convert this old C program I'd written into C++ as a personal exercise. The original C program is a simple Monte Carlo simulation ...
- 3,172
11
votes
2
answers
5k
views
C++ Beginner Bunny Exercise
I recently completed (somewhat) an exercise I found on a C++ forum. The exercise is found at the end of the list of exercises and is called "Graduation" and is about bunnies in a linked list.
...
- 602
11
votes
3
answers
502
views
Membrane protein diffusion in different confinement models
I am a junior Software Engineer, C++ is usually my main jam but I started picking up Python for a research project I am doing in college. I am eager to learn as much Python syntax, tricks, best ...
- 213
11
votes
2
answers
1k
views
Espresso Queue simulation
I was asked to do a technical test with the following specification, but my solution was rejected and I was not selected for the available position (Junior to "normal" level, with 4 days of time to ...
- 351
11
votes
3
answers
3k
views
Coding exercise to simulate animal population
(This is all available in a github repo if that's easier: https://github.com/paulnicholsen27/SpeciesSimulator)
I am submitting this as a code sample for a possible job, so I'm just looking for any ...
- 875
11
votes
2
answers
3k
views
Random D20 number generator
I'm teaching myself code using Zed Shaw's Learn Python The Hard Way, and I got bored during one of the memorization lessons so I thought I would make a random D20 number generator for when I play RPGS....
- 605
11
votes
1
answer
2k
views
Lotto simulator
With the recent craziness of the Powerball in the US, I got interested in building a little lotto simulator to see how frequently I could win with purchasing large amounts of tickets.
For those not ...
- 592
11
votes
1
answer
214
views
MAC1 simulator/debugger
In constructing an answer to this question, I wrote a small debugger/simulator for the MAC-1 instruction set.
There are a number of simulators already out there, but most are either too old to be ...
- 65.3k
10
votes
5
answers
3k
views
Ising model simulation
I have written this code to simulate Ising Model at one particular temperature in presence of magnetic field to observe hysteresis effect using the metropolis algorithm.
While the code runs and gave ...
- 101
10
votes
2
answers
2k
views
WaTor Code in Java
I just coded a version of WaTor, a population simulation game in which fish and sharks move around, breed, and eat each other. I am wondering how I did and if there are better ways to do some of the ...
- 721
10
votes
2
answers
1k
views
Monty Hall implementation
To get a feel of Monty Hall problem, I've implemented Monty Hall simulator in Python, using only two strategies: never switch the door or always switch the door. Please review it with an eye towards ...
- 769
10
votes
2
answers
5k
views
Solar System model
I have a model that works, as far as I know, but it's so messy! I am very new to Java, so I'd really appreciate some help tidying up. In particular, a lot of my constructors are empty which is ...
- 225
10
votes
4
answers
1k
views
Make a Deal program - using sets in Python
Mostly because I didn't believe the outcome of the classic game play Make-a-Deal (see https://math.stackexchange.com/questions/608957/monty-hall-problem-extended) I made this little program... and ...
- 771
10
votes
2
answers
1k
views
Powerball Lottery Simulator in C
I made a Powerball lottery simulator in C. I chose C because it is fast.
Here's how it plays:
The user plays one ticket every day.
The user can choose to play the same ticket every day or a ...
- 383
10
votes
1
answer
903
views
High performance physics simulation - core class design
Below is some stripped down code from a physics simulation. The classes Vector2, Line and ...
- 2,475
10
votes
2
answers
4k
views
Predator Prey Simulation
Below is a simple random walk predator prey simulation that is optimized to the best of my abilities. I would love to hear about any improvements that can made.
...
- 475
10
votes
1
answer
300
views
From Hummingbirds to Ornithopters: Simulating the Aerodynamics of Flapping Wings
Ptera Software
A Flapping Wing Aerodynamics Simulator Written in Python
Motivation
About a year ago, I became fascinated by how animals fly. As an aerospace engineering student, it surprised me that ...
9
votes
3
answers
4k
views
Simulation of an ocean containing sharks and fish
As part of my Java learning, I tried solving Part I of problem description here. The only issue that I see now is that I could not close the button of Frame.
...
- 3,321
9
votes
2
answers
6k
views
Ant Colony Simulator
This program is a simulation of an ant colony, inspired by SimAnt. It doesn't do it off the batch; there must be code that instructs the ants to follow scent tiles in particular and react to the food.
...
- 779
9
votes
1
answer
3k
views
ALOHA network simulation in Python
I'm currently studying the book
From Algorithms to Z-Scores: Probabilistic and Statistical Modelling in Computer Science
In the first chapter of the book the ALOHA network protocol is introduced as ...
- 297