// Online C# Editor for free

// Write, Edit and Run your C# code using C# Online Compiler

​

using System;

using System.Collections.Generic;

using System.Text.Json;

​

public class HelloWorld

{

    public static void Main(string[] args)

    {

        Console.WriteLine ("Try programiz.pro");

        var data = new List<GroupByUnitCodeDto>

        {

            new GroupByUnitCodeDto { UnitCode = "A", RowCount = 5 },

            new GroupByUnitCodeDto { UnitCode = "B", RowCount = 10 },

            new GroupByUnitCodeDto { UnitCode = "C", RowCount = 15 },

            new GroupByUnitCodeDto { UnitCode = "D", RowCount = 20 },

            new GroupByUnitCodeDto { UnitCode = "E", RowCount = 25 },

            new GroupByUnitCodeDto { UnitCode = "F", RowCount = 30 },

            new GroupByUnitCodeDto { UnitCode = "G", RowCount = 35 },

            new GroupByUnitCodeDto { UnitCode = "H", RowCount = 40 },

            new GroupByUnitCodeDto { UnitCode = "I", RowCount = 45 },

            new GroupByUnitCodeDto { UnitCode = "J", RowCount = 50 },

            new GroupByUnitCodeDto { UnitCode = "K", RowCount = 55 },

            new GroupByUnitCodeDto { UnitCode = "L", RowCount = 60 },

            new GroupByUnitCodeDto { UnitCode = "M", RowCount = 65 },

            new GroupByUnitCodeDto { UnitCode = "N", RowCount = 70 },

            new GroupByUnitCodeDto { UnitCode = "O", RowCount = 75 },

            new GroupByUnitCodeDto { UnitCode = "P", RowCount = 80 },

            new GroupByUnitCodeDto { UnitCode = "Q", RowCount = 85 },

            new GroupByUnitCodeDto { UnitCode = "R", RowCount = 90 },

            new GroupByUnitCodeDto { UnitCode = "S", RowCount = 95 },

            new GroupByUnitCodeDto { UnitCode = "T", RowCount = 100 },

            new GroupByUnitCodeDto { UnitCode = "U", RowCount = 105 },

            new GroupByUnitCodeDto { UnitCode = "V", RowCount = 110 },

            new GroupByUnitCodeDto { UnitCode = "W", RowCount = 115 },

            new GroupByUnitCodeDto { UnitCode = "X", RowCount = 120 },

            new GroupByUnitCodeDto { UnitCode = "Y", RowCount = 125 },

            new GroupByUnitCodeDto { UnitCode = "Z", RowCount = 130 },

        };

        var datas = SplitUnitRangeForJasper(data, 100, 8);

        string jsonString = JsonSerializer.Serialize(datas);

        foreach (var dd in datas)

        {

            Console.WriteLine ("Try programiz.pro {0} to {1}",dd.UnitCodeStart,dd.UnitCodeEnd);

        }

​

​

    }

    public class GroupByUnitCodeDto

    {

        public string UnitCode { get; set; } = "";

        public int RowCount { get; set; }

    }

    public class UnitCodeRangeDto

    {

        public string UnitCodeStart { get; set; } = "";

        public string UnitCodeEnd { get; set; } = "";

    }

    public static List<UnitCodeRangeDto> SplitUnitRangeForJasper(List<GroupByUnitCodeDto> groupUnits, int pageLimit = 1000, int rowPerPage = 8)

        {

            List<UnitCodeRangeDto> result = new List<UnitCodeRangeDto>();

            int totalRowPerFile = pageLimit * rowPerPage;

            int currentSum = 0;

            string unitCodeStart = "";

            string unitCodeEnd = "";

            foreach (var groupUnit in groupUnits)

            {

                if (currentSum == 0)

                {

                    unitCodeStart = groupUnit.UnitCode;

                }

​

                currentSum += groupUnit.RowCount;

                if (currentSum > totalRowPerFile)

                {

                    unitCodeEnd = groupUnit.UnitCode;

                    currentSum = 0;

                    result.Add(new UnitCodeRangeDto {

                        UnitCodeStart = unitCodeStart,

                        UnitCodeEnd = unitCodeEnd

                    });

                }

            }

            if(currentSum != 0) {

                result.Add(new UnitCodeRangeDto {

                    UnitCodeStart = unitCodeStart,

                    UnitCodeEnd = groupUnits[^1].UnitCode

                });

            }

            return result;

        }

}