Run build

./gradlew build

Execute app

./gradlew run

URI: POST http://localhost:7000/flattener

Body request:

{
	"input": "((10 ; 20 ; 30) ; 40))"
}

Expected response:

{
    "flattenResponse": "(10;20;30;40)",
    "depth": 1
}

URI: GET http://localhost:7000/flattener

Expected response:

[
    {
        "input": "((10 ; 20 ; 30) ; 40)",
        "result": "(10;20;30;40)",
        "depth": 1,
        "dateTime": "2021-07-25T09:25:20.219753Z"
    },
    {
        "input": "((10 ; ((20 ; (30))) ; (40)))",
        "result": "(10;20;30;40)",
        "depth": 4,
        "dateTime": "2021-07-25T09:52:57.817480Z"
    }
]

• Parsing, syntax validation and input processing on FlattenerService by using list, stacks and tree data structures
• Tree data structure used to represent nested list to be flattened.
• Test coverage evidence on IntegrationTest and FlattenerServiceTest
• Javalin as web framework