Category : random

I have C++ code with the Rcpp package included. Within a function I have the following loop: for(int i=0; i<N; i++){ double yi = y[i], xi = X_chain[i]; double numerator = R::dbeta( yi, alpha_par, beta, log=false ); double denumerator = R::dbeta( xi, alpha_par, beta, log=false ); double alpha = std::min(1.0,(numerator)/(denumerator)); (…) } where alpha_par and ..

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I’m trying to write an algorithm to create mazes. The algorithm looks like this: Start at a random cell. Mark the current cell as visited, get a list of the neighbors. For each neighbor, starting with a randomly selected neighbor: If that neighbor hasn’t been visited, remove the wall between this cell and that neighbor, ..

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I have this current code std::string randomMove = possibleMoves[rand() % possibleMoves.size()]; int randomMoveInt = std::stoi(randomMove); board[randomMoveInt-1] = "StackOverflow"; But everytime I restart the program the pattern is the same and does not change no matter how many times I run it. Is there a way to avoid this/any ideas? Thanks Source: Windows Que..

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=) I am new here and I am working on a simple school final project and I am having a hard time getting in touch with my teacher. The code isn’t showing any errors but isn’t working the way I want it to, i’ll give a simple run down as to what I want it ..

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std::shuffle returns same result each start of program, I don’t understand what’s wrong. Here is an example: #include <vector> #include <random> #include <iostream> #include <algorithm> using namespace std; int main() { vector<string> backgroundSongs = { "../music/Sound_04669.mp3", "../music/Sound_11084.mp3", "../music/Sound_17211.mp3" }; //std::random_device rd; //std::default_random_engine rng(rd()); shuffle(backgroundSongs.begin(), backgroundSongs.end(), std::mt19937(std::random_device()())); for (const auto& song : backgroundSongs) cout << song ..

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I am trying to create a game like a simple PapersPlease but when my program outputs a random name from my array it outputs a garbage value (�) and I’m not sure on how to fix this issue: #include <iostream> #include <ctime> #include <cstdlib> using namespace std; int random_number; string RandomName; string names[12] = {"Lucas","Rendeev","J2Trappy","D2Savvy","James","Daniel","Abraham","Shaggy","Luke","Harry","Rick","Morty"}; ..

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