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RecipeAllocation

Contents

  1. Introduction
  2. Algorithm
  3. Project Structure
  4. How To Run

Introduction

The project contains the implementation of recipe allocation algorithm for the default orders. It return a Boolean value representing if the constraints imposed are satisfied or not.

Algorithm

Greedy Allocation: Utilizes the recipes for which the stock is maximum. The detailed working is listed below

  1. We create a max-Priority queue for recipes based on the stock
  2. We create another max-Priority queue for orders based on the number of recipes required.
  3. For each order with k required recipes we select the top k recipes in stock from the earlier created priority queue.
  4. We reduce the count of each of the k recipes by the number of portions required for the order and push it back in the queue
  5. We reduce the order count by 1 and place it back in the order queue

Time Complexity O(nlog(a)+nlog(b)), where n is the number of orders, a is the number of unique recipes in stock, b is the different combinations of portions and recipes

Note it is possible to bring the complexity down to O(nlog(a)) by using a sorted list instead of a priority queue for orders. However, it is left as future work as the value of b is very small.

Project Structure

.
├── data                   # JSON files
├── source                 # Implementation of classes such as Recipes, Allocator etc.
├── utility                # Utility functions which can be used across the app
├── Dockerfile             # Dockerfile containing the docker instructions to set up the environment
└── README.md

How To Run

We provide 2 ways to run the algorithm. First one uses Docker and the second one requires python installation.

[DOCKER]

Firstly, navigate to the $ROOT of the project. The project structre at $ROOT is displayed above

Execute the command to build the image

docker build -t recipe_allocation .

Next, we need to run the image inside the container by

docker run -it recipe_allocation

Return True or False depending if the constraints were met or not

In order to run on different jsons one can either edit the CMD fields in the dockerfile appropriately CMD ["python", "main.py","-p", "./data/","-o","orders.json","-s","stock.json"]
or can replace the stock.json and orders.json in the $ROOT/data/ folder

[STAND-ALONE EXECUTION]Executing the application

If the user has a working python3 installation. One can easily execute the script execution

python main.py -p ./data/ -o orders.json -s stock.json

help

python main.py -h

p.s Prints the boolean value representing if the constraints in the problems are met or not. True for constraints being satisfied False otherwise