caiyiliang/maxprofitassigntask-deno

Parking Service System

Requirement

• Responsible: assign the workload equally between the two employees in a way that favours profit.

• Parking rate: Small cars - $25，large vehicles - $35

• Fuel rate: Every car with 10% or less fuel, will be refueled to maximum capacity - $1.75/litre

• Commission rate: Employee A - 11%, Employee B - 15%

Solutions

Two solutions on Parking Service System, one focuses on front end, another one is implemented with Deno, which is a new experiment on this powerful backend framework.

• Parking Service CLI: Deno, Typescript
• Parking Service dashboard: React, Typescript

New Change

• Replaced .reducer() method with higher-order function Array.map() in getAllCarsBillStatement.
  • Array.reducer() is for reduction usage. While it is a very powerful method, it's not always the easiest to read or grasp at a glance. An saying: the simplest code is written sequentially.
• Replaced for loop with Array.map() in carServiceAssigner.
• Parking Service CLI - Enable the ability to log the argument data (cars, employees) and save as local data in JSON format. Note: Command updated.

Parking Service CLI

• Play around with it
  • Install Deno
  • To have a test run, open terminal and run deno run mod.ts
  • To get the maxProfitAssigningTask result with default data, open terminal and run deno run --allow-read mod.ts --db NOTE: --allow-read is required as the security mechanism of Deno.
  • To get the maxProfitAssigningTask result with new/customize data, open terminal and run deno run --allow-write --allow-read mod.ts --data '[{ "licencePlate": "A", "size": "large", "fuel": { "capacity": 57, "level": 0.07 } }, { "licencePlate": "B", "size": "large", "fuel": { "capacity": 66, "level": 0.59 } }, { "licencePlate": "C", "size": "large", "fuel": { "capacity": 54, "level": 0.49 } }, { "licencePlate": "D", "size": "large", "fuel": { "capacity": 79, "level": 0.93 } }, { "licencePlate": "E", "size": "large", "fuel": { "capacity": 94, "level": 0.2 } }, { "licencePlate": "F", "size": "large", "fuel": { "capacity": 57, "level": 0.1 } }, { "licencePlate": "G", "size": "small", "fuel": { "capacity": 56, "level": 0.05 } }, { "licencePlate": "H", "size": "small", "fuel": { "capacity": 61, "level": 0.78 } }, { "licencePlate": "I", "size": "small", "fuel": { "capacity": 60, "level": 0.65 } }, { "licencePlate": "J", "size": "large", "fuel": { "capacity": 63, "level": 0.01 } } ]' --employee '[{"employee": "A", "commission":0.11}, {"employee": "B", "commission":0.15}]' NOTE: Data of cars and employees will be log as local data in JSON format. --allow-write --allow-read is required as the security mechanism of Deno.

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