Rover. Finding the shortest pass by Dijkstra’s shortest path algorithm

Related tags

Algorithmsrover
Overview

rover

Rover. Finding the shortest path by Dijkstra’s shortest path algorithm

Задача Вы — инженер, проектирующий роверы-беспилотники. Вам надо спроектировать путь ровера по заранее известной местности с максимальной экономией заряда.

Местность Вам пришли данные о местности в закодированном виде: фотография, сконвертированная в матрицу с числами. Одна матрица — это прямоугольный снимок размером х на y метров. Вот пример одной такой сконвертированной фотографии, на ней снимок в 100 на 100 метров: Фото 1: 0 2 3 4 1 2 3 4 4 1 3 4 5 6 2 4 5 6 7 1 6 7 8 7 1 Числа показывают высоту над уровнем моря. 0 — это высота ровно на уровне моря, а, например, 4 — это 4 единицы над уровнем моря. На Фото 1 закодирован холм, пологий слева и резко обрывающийся справа. Небольшой холмик выглядел бы вот так Фото 2: 0 1 1 1 0 1 1 3 1 1 0 1 1 1 0 0 0 0 0 0 А вот так: ложбина между двумя холмами Фото 3: 1 1 2 3 4 1 0 1 2 3 2 1 1 1 2 3 3 1 0 1 4 3 1 1 0 На этих данных - скала или овраг, так как виден очень резкий перепад высот в середине снимка Фото 4: 1 1 6 7 7 1 1 6 7 8 1 6 7 8 9 А на этом - маленькая ямка Фото 5: 3 4 4 4 4 3 3 2 1 1 1 4 4 2 1 1 3 4 4 4 2 2 3 4 Данные придут вам в виде матрицы с неотрицательными числами. Размер матрицы NxM.

Ровер Ровер всегда движется из верхней левой точки [0][0] в правую нижнюю точку [N - 1][M - 1], где N и M - это длина и ширина матрицы. Это надо для того, чтобы разрезать фотографию на одинаковые куски, обработать их по-отдельности, а потом склеить весь путь. У вашего ровера есть несколько ограничений:

Движение Из любой точки ровер может двигаться только в четыре стороны: на север, юг, запад, восток. Ровер не может ехать по-диагонали — эта функция еще не реализована. Ровер не может вернуться в ту точку, в которой уже был. Заряд Ровер ездит на заряде. Вы знаете, что для ровера очень затратно подниматься и опускаться. Он тратит единицу заряда на само движение, и дополнительные единицы на подъем и спуск. Ровер бы вообще спокойно жил, если бы ездил по асфальту в Беларуси, тогда бы он тратил себе линейно заряд и в ус не дул, но жизнь его сложилась иначе. Расход заряда Заряд расходуется по правилу: На 1 шаг ровер всегда тратит 1 единицу заряда. На подъем или спуск ровер тратит заряд, пропорциональный сложности подъема или спуска. Сложность подъема или спуска - это разница между высотами.

Например, в такой местности 1 2 1 5 на путь из [0][0] в [0][1] ровер потратит 2 единицы заряд: 1 единица заряда на само движение, и еще 1 единицу заряда на подъем в [0][1]. А из [0][1] в [1][1] ровер потратит 4 единицы заряда: 1 единица на само движение, и 3 единицы (5 - 2) на подъем Вам надо рассчитать путь ровера из верхей левой [0][0] точки в правую нижнюю [N - 1][M - 1] точку с минимальной тратой заряда. Вы не заранее знаете размер фотографии, которую будете обрабатывать, N и M - произвольные неотрицательные числа.

План Сделайте план пути и планируемый расход и выведите. Для фотографии 0 4 1 3 план будет такой: [0][0]->[1][0]->[1][1] steps: 2 fuel: 5 Ровер едет из 0 в 1 в 3, сделает два шага, потратит 5 заряда. Если бы он поехал сначала в 4, потом в 3, он бы сделал то же количество шагов, но потратил бы 7 заряда. Оптимальный путь: 2 шага и 5 заряда. Если на карте есть несколько вариантов пути, выберите любой из них.

You might also like...
Fedlearn algorithm toolkit for researchers
Fedlearn algorithm toolkit for researchers

Fedlearn algorithm toolkit for researchers

A custom prime algorithm, implementation, and performance code & review
A custom prime algorithm, implementation, and performance code & review

Colander A custom prime algorithm, implementation, and performance code & review Pseudocode Algorithm 1. given a number of primes to find, the followi

Sorting Algorithm Visualiser using pygame
Sorting Algorithm Visualiser using pygame

SortingVisualiser Sorting Algorithm Visualiser using pygame Features Visualisation of some traditional sorting algorithms like quicksort and bubblesor

This project is an implementation of a simple K-means algorithm
This project is an implementation of a simple K-means algorithm

Simple-Kmeans-Clustering-Algorithm Abstract K-means is a centroid-based algorithm, or a distance-based algorithm, where we calculate the distances to

Search algorithm implementations meant for teaching

Search-py A collection of search algorithms for teaching and experimenting. Non-adversarial Search There’s a heavy separation of concerns which leads

8-puzzle-solver with UCS, ILS, IDA* algorithm
8-puzzle-solver with UCS, ILS, IDA* algorithm

Eight Puzzle 8-puzzle-solver with UCS, ILS, IDA* algorithm pre-usage requirements python3 python3-pip virtualenv prepare enviroment virtualenv -p pyth

A Python Package for Portfolio Optimization using the Critical Line Algorithm

A Python Package for Portfolio Optimization using the Critical Line Algorithm

🧬 Training the car to do self-parking using a genetic algorithm
🧬 Training the car to do self-parking using a genetic algorithm

🧬 Training the car to do self-parking using a genetic algorithm

A raw implementation of the nearest insertion algorithm to resolve TSP problems in a TXT format.

TSP-Nearest-Insertion A raw implementation of the nearest insertion algorithm to resolve TSP problems in a TXT format. Instructions Load a txt file wi

Releases(V2.0)
  • V2.0(Nov 8, 2021)

    Rover v02 Update your first version of Rover code. Your task is to calculate the path with minimized fuel cost. The first version is working, but real-life tests showed that it didn't match the reality.

    What are the changes?

    Below the sea level The previous version processes only the terrain that is above sea level. But in reality, the landscape can be both above and below sea level. The new version of the code must handle different terrains. The numbers still show the height. Zero 0 is a sea level. Positive numbers show the elevation above sea level. Negative numbers mean that the terrain is below sea level. For example, here is already parsed photo of a small lake: {{"0","-1","-1","-1","0"}, {"-1","-1","-3","-1","-1"}, {"0","-1","-1","-1","0"}, {"0","0","0","0","0"}}

    Impossible Elevation Nature is unpredictable, and sometimes there are places that the Rover cannot reach. Such terrain is marked as X on the photo. Rover cannot go into that place. For example, here is a unparsed photo with unreachable terrain: 1 1 X X X 1 1 X X 8 1 1 0 0 3

    Updated movement Now your Rover can move diagonally! It still cannot get back to the same place, though. Rover still moves from the [0][0] to [N - 1][M - 1]. N and M are arbitrary positive numbers.

    Updated fuel mileage

    Fuel Mileage with Negative Numbers The fuel cost works the same with negative numbers: moving from 0 to 2 will cost the same two fuel units as moving from 0 to -2. Moving from 2 to -2 will cost the same as moving from 4 to 0.

    Fuel Mileage with Diagonal Movement Diagonal movement requires different fuel mileage. Every second diagonal move consumes two fuel units. The first diagonal move is one fuel, the second diagonal move is two fuel, the third is one fuel, the fourth is two, etc. For example, here
    1 2 1 1 2 1 1 7 0 a path from [0][0] to [1][1] costs 1 fuel for diagonal move plus 1 fuel for elevation, and a path from [1][1] to [2][2] costs 2 fuel for the second diagonal move and 2 fuel for descent.

    Error handling

    Data Data is not ideal. Sometimes the parser that converts from the photo to numbers shows bizarre results. Please make sure that the matrix contains only numerals and the 'X' sign.

    Exceptions Something may go wrong. There may be no matrix at all, or the matrix may contain weird data, or the path may start with X at [0][0]. There are tons of ways that the program can go wrong. Implement exception handling. The exception rules: if the Rover cannot start its movement, throw the CannotStartMovement exception. End the program and write the reason to path-plan.txt So, if the Rover cannot move, throw an exception and end the program. Write to the path-plan.txt something like "Cannot start a movement because ...... ." Come up with your description of a problem. Write in clear and simple English.

    Source code(tar.gz)
    Source code(zip)
Ralebel is an interpreted, Haitian Creole programming language that aims to help Haitians by starting with the fundamental algorithm

Ralebel is an interpreted, Haitian Creole programming language that aims to help Haitians by starting with the fundamental algorithm

Lub Lorry Lamysère 5 Dec 01, 2022
frePPLe - open source supply chain planning

frePPLe Open source supply chain planning FrePPLe is an easy-to-use and easy-to-implement open source advanced planning and scheduling tool for manufa

frePPLe 385 Jan 06, 2023
Sorting-Algorithms - All information about sorting algorithm you need and you can visualize the code tracer

Sorting-Algorithms - All information about sorting algorithm you need and you can visualize the code tracer

Ahmed Hossam 15 Oct 16, 2022
Repository for data structure and algorithms in Python for coding interviews

Python Data Structures and Algorithms This repository contains questions requiring implementation of data structures and algorithms concepts. It is us

Prabhu Pant 1.9k Jan 01, 2023
This application solves sudoku puzzles using a backtracking recursive algorithm

This application solves sudoku puzzles using a backtracking recursive algorithm. The user interface is coded with Pygame to allow users to easily input puzzles.

Glenda T 0 May 17, 2022
FingerPy is a algorithm to measure, analyse and monitor heart-beat using only a video of the user's finger on a mobile cellphone camera.

FingerPy is a algorithm using python, scipy and fft to measure, analyse and monitor heart-beat using only a video of the user's finger on a m

Thiago S. Brasil 37 Oct 21, 2022
Algorithmic trading backtest and optimization examples using order book imbalances. (bitcoin, cryptocurrency, bitmex)

Algorithmic trading backtest and optimization examples using order book imbalances. (bitcoin, cryptocurrency, bitmex)

172 Dec 21, 2022
Primedice like provably fair algorithm

Primedice like provably fair algorithm

Ryu juheon 3 Dec 02, 2022
Implemented page rank program

Page Rank Implemented page rank program based on fact that a website is more important if it is linked to by other important websites using recursive

Vaibhaw 6 Aug 24, 2022
Minimal pure Python library for working with little-endian list representation of bit strings.

bitlist Minimal Python library for working with bit vectors natively. Purpose This library allows programmers to work with a native representation of

Andrei Lapets 0 Jul 25, 2022
Genetic algorithms are heuristic search algorithms inspired by the process that supports the evolution of life.

Genetic algorithms are heuristic search algorithms inspired by the process that supports the evolution of life. The algorithm is designed to replicate the natural selection process to carry generatio

Mahdi Hassanzadeh 4 Dec 24, 2022
Python sample codes for robotics algorithms.

PythonRobotics Python codes for robotics algorithm. Table of Contents What is this? Requirements Documentation How to use Localization Extended Kalman

Atsushi Sakai 17.2k Jan 01, 2023
A litle algorithm that i made for transform a picture in a spreadsheet.

PicsToSheets How it works? It is an algorithm designed to transform an image into a spreadsheet file. this converts image pixels to color cells of she

Guilherme de Oliveira 1 Nov 12, 2021
A Python description of the Kinematic Bicycle Model with an animated example.

Kinematic Bicycle Model Abstract A python library for the Kinematic Bicycle model. The Kinematic Bicycle is a compromise between the non-linear and li

Winston H. 36 Dec 23, 2022
Python Package for Reflection Ultrasound Computed Tomography (RUCT) Delay And Sum (DAS) Algorithm

pyruct Python Package for Reflection Ultrasound Computed Tomography (RUCT) Delay And Sum (DAS) Algorithm The imaging setup is explained in these paper

Berkan Lafci 21 Dec 12, 2022
A GUI visualization of QuickSort algorithm

QQuickSort A simple GUI visualization of QuickSort algorithm. It only uses PySide6, it does not have any other external dependency. How to run Install

Jaime R. 2 Dec 24, 2021
Sorting Algorithm Visualiser using pygame

SortingVisualiser Sorting Algorithm Visualiser using pygame Features Visualisation of some traditional sorting algorithms like quicksort and bubblesor

4 Sep 05, 2021
causal-learn: Causal Discovery for Python

causal-learn: Causal Discovery for Python Causal-learn is a python package for causal discovery that implements both classical and state-of-the-art ca

589 Dec 29, 2022
marching Squares algorithm in python with clean code.

Marching Squares marching Squares algorithm in python with clean code. Tools Python 3 EasyDraw Creators Mohammad Dori Run the Code Installation Requir

Mohammad Dori 3 Jul 15, 2022
Slight modification to one of the Facebook Salina examples, to test the A2C algorithm on financial series.

Facebook Salina - Gym_AnyTrading Slight modification of Facebook Salina Reinforcement Learning - A2C GPU example for financial series. The gym FOREX d

Francesco Bardozzo 5 Mar 14, 2022