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.
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Simulating a Moving Average Process
I was studying stochastic processes and thought to independently simulate a moving average process.
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Python Genetic Algorithm Implementation
I've made this to pick the LQR parameters for my self balancing robots simulation. So to break down what I have done,
Randomly Create Population
I create a random population. The population is a list ...
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Spatial radius search in Boid simulation
I am working on a Boid simulation with 10,000 boids. I've successfully utilized geometry shaders and an array<GLfloat[3], MAX_BOIDS> for vertices to enhance ...
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Temperature of a Lennard-Jones system
Are the formulas used in getTemperature() and setTemperature() correct?
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Agent based Dengue transmission simulation
I'm trying to implement the dynamics of Dengue transmission between mosquitoes and humans. I decided create two classes, one for the human population and another for the mosquitoes. Both are based on ...
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Minimalistic implementation of Leapfrog integration algorithm (2)
Please review this C++ listing of an implementation of Leapfrog integration.
This C++ listing is rewritten according to this review.
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Counting number of time frames in a simulation trajectory file
I have written a function in c++, which accepts an "ifstream" object (file) to read from and a string to match a header token in the file. This way I am counting how many times a token ...
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Simulating disease spread in a population
I am trying to build a model that allows me to estimate the spread of disease in the population. The setup is similar to the SIR model, with the difference that this model includes the stochastic ...
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Flowers in the Window: An Exercise in Using Classes and Objects in Rust
The Problem
As part of my doomed efforts to learn Rust, I decided to get to grips with how the language handles classes and objects. But, instead of taking on some well-known exercise, I thought it ...
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Molecular Simulation: PBC using the Ewald Summation technique
The following is a Rust implementation of polymer simulation where the PBC(periodic boundary condition) has been implemented using the Ewald Summation technique.
Can you review the code?
Is the PBC ...
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Molecular simulation: Minimum Image Convention
Can you review the following code to check to see if the Minimum Image Convention is properly implemented?
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plotting Monte Carlo Simulation from excel sheet
I have created the following code:
Option Explicit
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Simulation: Find a waiting queue order that minimizes the total waiting time - Java
Intro
Suppose we are given a queue of waiting times \$\langle t_1, \ldots, t_n\rangle\$. The first "person" \$(t_1)\$ leaves the queue immediately. The persons \$(t_i), i > 1\$ all have ...
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Python Logic Gate Circuit Simulator [closed]
I have recently become interested in simulating logic circuits because of a electronics class at school. I have created a functioning simulator for logic gate circuits in Python. My implementation ...
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Means square displacement (MSD)
I have written a code to calculate the MSD of some molecules. The code averages over multiple time origins (sliding time window) and over all the molecules. I have also made it do one extra thing: do ...
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Simulating surname convergence in a population
I was curious a few weeks ago about how surnames come and go (mostly on the go). I wanted to know how quickly surnames die out, because (in my simplified simulation world) once the last person with a ...
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Simulation of a real capacitor to calculate its capacitance
The goal is to simulate a real flat plate capacitor in 2D. The potential of the armature is fixed to +V and -V, on the edges of the simulation cell the potential is zero. Between the plates of the ...
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Smoothed Particle Hydrodynamics in Rust
So I'm simultaneously learning both Rust and Smoothed Particle Hydrodynamics.
I've been using this video from AMD as a reference and the provided smoothing kernels.
At this stage, I've not optimised ...
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Bruteforce proof of an arithmetic expansion scheme expression in array lists (Java)
Given a list of, say, integers, one way to implement such a list is to rely on an array under the hood. When we are adding elements to the array list, we might need to make the internal array larger. ...
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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" ...
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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.
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Simulating a toilet seat usage in Java - follow-up
(See the previous iteration.)
This time, I removed the stuff I don't need in my demo runner. Also, I consolidated some code that seemed DRY to me.
Simulation rules
When a female arrives, she ensures ...
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Simulating a toilet seat usage in Java
(See also the next iteration.)
I have this small simulation program simulating a toilet seat. The toilet seat may be in two positions: up or down. If a male arrives to the toilet to urinate, and ...
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I made a webpage that simulates sharks eating fish in the torrid world of Wa-tor
I've been self-studying HTML/CSS/JS. I read about Wa-tor. It's a population dynamics simulation which simulates fish and sharks breeding and predating. This seemed cool so I decided to implement it....
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Traffic simulation GUI: an exercise in concurrent programming using threads
To avoid a code dump I have removed most of the code and left the first few lines of constructors and methods and anything relevant. Full code at the bottom.
The purpose of this code is to use threads ...
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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 ...
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Simulation of sand particle collision
I am making a module that allows you to create sand and simulate it. I have successfully done this, but it runs very slowly. I need this to be able to simulate at least 1000 particles, at a fps higher ...
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Estimate an average duration of every game state in a football match given implied goals for home and away teams
What my program does
I'm trying to estimate for how many minutes in average a football(soccer) match will be in different game states depending on implied goals of both teams.
Problem domain
For our ...
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Finds a moving target within a given space
https://youtu.be/XEt09iK8IXs?t=1264
Ben Awad did a mock interview with a React developer, and asked this question. There are a set of 100 holes (0-99). A rabbit is located in one of these holes. Every ...
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Monty hall python simulation
I have the following code that simulates the monty hall problem (see google for more details). I used sets to do it but is there a more intuitive or efficient way to do it?
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Given the arrival times of people at a door, resolve their passage times
I was trying to solve the following question:
You are given 2 arrays: one representing the time people arrive at a door and other representing the direction they want to go (in or out) You have to ...
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Electronic circuit logic gates simulator
I've seen a lot of C++ simulators implementing logic gates, but absolutely all of them use the wrapped bitwise operations of the programming language itself. I have tried to omit the use of a bitwise ...
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Frozen yogurt shop simulator
I made this project that simulates a frozen yogurt shop, where you can pick your flavor, toppings, and sauces and then pay for it. I'm a beginner at python and this is my first project. I don't even ...
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Heston model implementation in C++
I have implemented an option pricing algorithm following the Heston model. The simulation involves specifying the number of simulations, then generating a discretized path for each simulation (code ...
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Betting strategy simulation
I lately got interested into betting systems, dice strategies and algorithms. I took some time to think about it and eventually ended up with an algorithm of my own.
Considering that I don't have ...
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Python implementation of a Galton board simulation
I watched a YouTube show the other day in which a variant of a Galton board is used to make a random selection from a range of movies that will be reviewed in that show. In contrast to a standard ...
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Blackjack strategy simulation
I'm very new to python (been coding for about two days) and have created a programme that simulates blackjack games so that I can work out optimal strategy over many iterations.
The problem is that ...
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Coin flip streaks in Python
Below is the wording from the problem in Automate the Boring Stuff book. The bold text leads me to believe that I should be checking for a streak and not multiple streaks within each experiment of 100 ...
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Percolation threshold simulation using C++
I am studying Algorithms by Princeton University. The first week assignment is to simulate percolation by using Java.
https://coursera.cs.princeton.edu/algs4/assignments/percolation/specification.php
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High performance physics simulation - core class design
Below is some stripped down code from a physics simulation. The classes Vector2, Line and ...
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Barnes-Hut \$n\$-body simulation (3D) in C++
I have implemented the Barnes-Hut algorithm for \$n\$-body-simulations (in this case "sort-of" 3D-gravity - see below). I'd appreciate any comments for improving my code (especially ...
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Plants vs. Zombies simulator
I am making a pvz simulator. We have a game board with 1 = peashooter and 2 = zombie:
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Robotic swarm simulation: aggregation
This program simulates the phenomenon of aggregation of a swarm of robots with no cooperation between each other and each robot following a very simple rule:
The velocity of this robot has a random ...
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Conway's Game of Life in C++ with a Board Struct
I made the game of Life in C++ for a highschool class project. The website we're using doesn't have an autograder for C++, and my programming teacher doesn't really know how to program... so I'd love ...
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Monte-carlo simulation code - simple exercise
I created a quick monte-carlo simulation which seems to do what I want (simple version below). The code basically simulates a Poisson distribution, say this results in a simulation of ...
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Quickly update, clone, and iterate ball simulation
What the program does: I have made a program that simulates a ball in an area made of triangles and many optimizations because it's for high-performance ball path simulation (technically ball path ...
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Path of a particle in a non-uniform B field
I have completed my project which simulates the path of a particle trapped in a device known as a magnetic mirror. I would like your thoughts and improvements on my implementation.
Here is the code:
<...
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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 ...
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Discrete Event Simulator
I'm an undergraduate student and I have this assignment on a Discrete Event simulator. Currently I have completed to the end of v1.2 here. Attached also, is an algorithmic overview.
I have wrote my ...
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