## 1. Problem Statment

Design a Parking lot which can hold `n` Cars. Every car been issued a ticket for a slot and the slot been assigned based on the nearest to the entry. The system should also return some queries such as:

• Registration numbers of all cars of a particular colour.
• Slot number in which a car with a given registration number is parked.
• Slot numbers of all slots where a car of a particular colour is parked.

#### Disclaimer

This solution is for reference purpose. Please, do not copy-paste it. Companies are smart enough to catch if you are cheating. If your solution got rejected due to this we're not responsible for it.

## 2. Solution Approach

A car consist of Registration number, slot number and it's colour. Likewise our Parking Lot consist slots. For not making it too complicated, I choose a python dictionary for storing cars on slots and implemented the functionalities as accordingly.

The solution of above problem statement is available here. You can directly download this solution from here.

## 3. Supported Commands

• `create_parking_lot` <`n`>
To create a Parking lot. Where `n` is the size of the parking lot

• `park` <`registration_number`> <`colour`>
To park the car in the parking lot and prints the allocated slot in the parking lot. Where `registration_number` is given registration number for the car and `colour` is given colour for the car

• `leave` <`slot`>
To leave the parking lot from desired slot and prints the leaving slot. given slot number. Where `slot` is given sloat number

• `status`
To check the status of Parking Lot

• `slot_numbers_for_cars_with_colour` <`colour`>
To prints the registration number of the cars for the given colour. Where `color` is given colour

• `slot_number_for_registration_number` <`registration_number`>
prints the slot number of the cars for the given number. Where `registration_number` is given registration number.

• `registration_numbers_for_cars_with_colour` <`colour`>
To prints the slot number of the cars for the given colour. Where `colour` is given colour.

## 4. Running Application

#### 4.1 Running the application in File mode:

``````./ParkingLot.py input.txt
``````

#### 4.2 Running the application in Interactive mode:

``````./ParkingLot.py
``````

## 5. Test Cases

• Total number of test cases - 14
• Code coverage - 86%

#### 5.1 For running the tests

``````python Tests.py
``````

#### 5.2 For calculating code coverage

``````coverage run Tests.py
coverage report
``````

## 6. Running the application in a Docker Container

#### Build the image:

``````docker build -t parkinglot:1.0 .
``````

#### 6.1 Running the application in Interactive mode:

``````docker run -it parkinglot:1.0 ./ParkingLot.py
``````

#### 6.2 Running the application in File mode:

``````docker run -it parkinglot:1.0 ./ParkingLot.py input.txt
``````

## HTML and CSS Interview Question for Frontend Developer

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