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.

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First time ATM machine program

I have created a gorgeous ATM machine program. It makes all other ATMs look like crap, if I do say so myself. What I would like is some sort of critique on what I've done: Is there better syntax I ...
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Comparing three packet routing algorithms via simulation in Java

Inspired by my question Simulating a random packet routing algorithm and printing packet statistics in Java I decided to implement two more packet routing algorithms: one that computes all the ...
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656 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 ...
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53 views

Simulating a random packet routing algorithm and printing packet statistics in Java

I have this short program for simulating a random packet routing algorithm: Packet.java ...
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83 views

Dice simulation and counting pairs

This is my first time putting a code together for Java based on my own so i was hoping if you someone would be kind enough to review and provide feedback or constructive criticism on this code. The ...
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37 views

Income Simulation programifier

http://pastebin.com/7UqD0gwF I'm looking for serious feedback on my first serious program. This is a program to calculate PvZ income over time of sunflowers and sunshrooms on nighttime pool levels. ...
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Physical simulation of diffusion-limited aggregates

The following code generates Diffusion Limited Aggregates on a two-dimensional square lattice. Some of the code has been omitted (e.g. support for differing lattice types and dimensions) for code-...
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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 ...
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34 views

Livelock simulation

I want to understand how Livelocks happen and also how to translate my thought in to working code. I have written the following snippet to simulate a livelock between two persons passing each other in ...
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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 ...
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115 views

Hungry ant AI: any food here?

I'm working on a little AI to simulate ants (very basic). The full code can be found on Github. This function (in Ants.py) takes a list of Tuples containing ...
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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 ...
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79 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 ...
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56 views

Particle in Cell: efficient data structure handling

I am building a simulation where you have 'Agents' distributed over a rather large landscape. Because the number of Agents is small, compared to the size of the landscape, I use the PIC approach where ...
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29 views

Distributed (asynchronous) averaging

This code simulates a distributed averaging protocol. There is a network of nodes, and at the clicks of a Poisson process: A random node wakes up Transmits it's current average to all the nodes it ...
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80 views

Circuit Simulator

I'm trying to learn Golang from Java, and to do this, I wrote a basic circuit simulator with only two circuits. Is there anything I can do better to make it more idiomatic? Simulator.go ...
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2answers
63 views

Random positioning and movement of a rabbit on a table

I was inspired by this: If you would put a rabbit randomly on a circular table with radius r= 1 meter and it moves 1 meter in a random direction, what is the chance it won't fall off? I ...
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432 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 ...
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2answers
156 views

Distributed system simulator

I have coded a very simple distributed system simulator in Python. It uses multiprocessing to assign tasks, and queues to communicate between processes. The code is shown below. ...
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2answers
61 views

Generating time series for generator ON or OFF

Want to create time series for the nuclear power plant performance using the equation for Time to fail and time to repair for 8736 hours in the year so that I have the time series in hours when the ...
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70 views

Functional translation of dice simulation

I have tried my hands at "functionalising" a toy problem I had: find the expected number of throws of a six sided die until all sides have been seen (the answer is 14.7) My starting point is my ...
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108 views

Attempting to run multiple simulations of the Gillespie algorithm for a set of stochastic chemical reactions in less than 10 minutes

I have written Python code that generates a plot. In the code below, when I set maxtime = 0.1, the program takes ~50s and when I set ...
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78 views

Approximating π via Monte Carlo simulation

Inspired by a tweet linked to me by a friend and a Haskell implementation by her for the same problem, I decided to try my hand at approximating the value of π using everything in the Haskell standard ...
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1answer
146 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 ...
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Spatial parametric scaling in agent-based model

I’m running a simple agent-based disease spread model on a 2D lattice, where disease transmission in a population depends on each individual’s chance of avoiding infection at every time step, which ...
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67 views

Quite-Off-The-Bat Complex Console Ant Colony Simulator w/ Partial AI

As a follow-up of my previous non-off-the-bat Ant Colony Simulator, we have this one that works off-the-bat... quite; the code for when the ants find and take the food isn't really done but it would ...
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1k 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. ...
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1answer
85 views

Velocity verlet implementation

My code is meant to update the positions and velocities of planets. There are a few methods in this class, but updatePosition and ...
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119 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 ...
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1answer
115 views

War Card Game Simulator

This is the second thing I've ever written in Python. I am just looking for what I could improve upon along with things that could be done better. It is as compact as I could make it with my current ...
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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 ...
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248 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 ...
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Discrete event simulation of a prioritized lunch queue

Note This post is a continuation of Discrete event simulation of a prioritized lunch queue in Java (Data structures). Please refer to it for problem description. This part about "algorithms": all ...
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Discrete event simulation of a prioritized lunch queue in Java (Data structures)

(See also the Algorithms part.) Post details The program I am putting for being reviewed does not fit entirely in a single post, so I have to resort to the equation by Niklaus Wirth: Algorithms + ...
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322 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 ...
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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 ...
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272 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 ...
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Python object-oriented pipe cooling simulations

Here is my code simulating liquid in a pipe cooling under different conditions. How did I do approaching this in an object orientated way? Is there any way I can improve this code? ...
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1answer
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Airport Simulator [closed]

I tried this program in both Orwell DevC++ and Visual Studio 2013 (program works correctly). My astonishment is the performance of the same program in both IDEs. While the former took only 395 ...
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398 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. ...
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3answers
87 views

Genetic Drift Simulator - Follow Up

This question is a follow-up of a previous question of mine: Genetic Drift Simulator. Following the advice given in the last question, and some more general improvements, the code has been slimmed ...
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310 views

Genetic Drift simulator

Genetic drift — along with natural selection, mutation, and migration — is one of the basic mechanisms of evolution. In each generation, some individuals may, just by chance, leave behind a few ...
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Generating a PANDAS DataFrame of simulated coin tosses

It's taking my machine quite a long time to execute 1 billion (1st loop x 10, 2nd loop x 1000, 3rd loop x 100,000) instructions. Suggestions for performance enhancements? Sources of potential concern: ...
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565 views

Simulation of 2 dice rolls

I wrote a program that records how many times 2 fair dice need to be rolled to match the probabilities for each result that we should expect. I think it works but I'm wondering if there's a more ...
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1answer
67 views

Java “pulse” between threads

I have two threads. One runs a simulation and one runs a UI. In the UI, it is possible to trigger a "tick" of the simulation. There are a few constraints: Ticks run on the simulation thread Each ...
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1answer
434 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 ...
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3answers
921 views

Slot Machine in Python

I have made this little program which allows you to play a slot machine: ...
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1answer
113 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 ...
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230 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 ...
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2answers
73 views

2D physics game engine

I'm writing a 2D game engine, and I just wrote the physics for it to handle collisions between AABBs and circles. It's on GitHub. Some of my worries are that my code isn't OOP, because I have to do ...