using System;

using System.Collections.Generic;

using Newtonsoft.Json;

using System.Linq;

public class Program

{

    public static void Main()

    {

        // Please email conductiv-eng@outlook.com if you have any questions.

        // When complete, please send your name and the URL of your "Share Link" (.NET Fiddle menu item Share > Share Link) to conductiv-eng@outlook.com. Thank you!

        // Note: usings directives include typical libraries needed (feel free to add more if needed), also NuGet Package Newtonsoft.Json is included

        // Given input json for three organizations

        // Return list of all years in date range:

        // 1) Calendar years

        // 2) Fiscal years

        var inputJSON = @"

        [

            {

                orgId: 1,

                startDate: '2018-1-01T00:00:00',

                endDate: '2020-8-29T00:00:00',

                fiscalYearEnd: 12

            },

            {

                orgId: 2,

                startDate: '2018-1-01T00:00:00',

                endDate: '2020-8-29T00:00:00',

                fiscalYearEnd: 6

            },

            {

                orgId: 3,

                startDate: '2018-9-01T00:00:00',

                endDate: '2020-8-29T00:00:00',

                fiscalYearEnd: 8

            }

        ]";

        //Correct Output

        /*

        [

            {

                "orgId": 1,

                "calendarYears": [2018,2019,2020],

                "fiscalYears": [2018,2019,2020]

            },

            {

                "orgId": 2,

                "calendarYears": [2018,2019,2020],

                "fiscalYears": [2018,2019,2020,2021]

            },

            {

                "orgId": 3,

                "calendarYears": [2018,2019,2020],

                "fiscalYears": [2019,2020]

            }

        ]

        */

​

        // TODO Tasks

        // 1) Create classes to deserialize JSON (use JSON.NET)

        // 2) Perform calculation from start/end dates to get range of calendar and fiscal years

        // 3) Output JSON to match correct output above

        Org[] orgs = JsonConvert.DeserializeObject<Org[]>(inputJSON);

        List<OrgOutput> orgs2 = new List<OrgOutput>();

        foreach (Org org in orgs) {

            OrgOutput o = new OrgOutput();

            o.orgId = org.orgId;

            o.calendarYears = new List<int>();

            o.fiscalYears = new List<int>();

            for (int y=org.startDate.Year; y<=org.endDate.Year; y++) {

                o.calendarYears.Add(y);

            }

            int fiscalStartYear=org.startDate.Year;

            if (org.fiscalYearEnd <= org.startDate.Month) {

                fiscalStartYear++;

            }

            int fiscalEndYear=org.endDate.Year;

            if (org.endDate.Month > org.fiscalYearEnd) {

                fiscalEndYear++;

            }

            for (int y=fiscalStartYear; y<=fiscalEndYear; y++) {

                o.fiscalYears.Add(y);

            }

            // collect it

            orgs2.Add(o);

        }

        string jsonOutput = JsonConvert.SerializeObject(orgs2);

        Console.WriteLine(jsonOutput);

    }

}

​

// Additional classes can go here

public class Org

{

    public int orgId {get; set;}

    public DateTime startDate {get; set;}

    public DateTime endDate {get; set;}

    public int fiscalYearEnd {get; set;}

}

​

public class OrgOutput

{

    public int orgId {get; set;}

    public List<int> calendarYears {get;set;}

    public List<int> fiscalYears {get; set;}

}