XOR | C# Online Compiler

XOR by Anonymous

using System;
using System.Linq;
using MoreLinq;

namespace ConsoleApp1
{
    public class Program
    {
        public static void Main(string[] args)
        {
            Console.WriteLine(DoCalc(new int[] { 138, 0, 2, 110 }));
            Console.WriteLine(DoCalc(new int[] { 138, 0, 1, 2, 110 }));
            Console.WriteLine(DoCalc(new int[] { 0,1,2,3,4 }));
            Console.WriteLine(DoCalc(new int[] { }));

            Console.ReadLine();

        }

        public static int DoCalc(int[] array)
        {
            if (array.Length == 0)
                return 0;

            var result = array
                .OrderBy(z => z)
                .Select((item, index) => new { item, diff = item - index })
                .Pairwise((first, second) => new { first, second })
                .TakeUntil(z => z.first.diff != z.second.diff).LastOrDefault();

            if (result.first.diff == result.second.diff)
            {
                return result.second.item + 1;
            }

            return result.first.item + 1;
        }
    }
}

​x
 
using System;
using System.Linq;
using MoreLinq;
​
namespace ConsoleApp1
{
    public class Program
    {
        public static void Main(string[] args)
        {
            Console.WriteLine(DoCalc(new int[] { 138, 0, 2, 110 }));
            Console.WriteLine(DoCalc(new int[] { 138, 0, 1, 2, 110 }));
            Console.WriteLine(DoCalc(new int[] { 0,1,2,3,4 }));
            Console.WriteLine(DoCalc(new int[] { }));
​
            Console.ReadLine();
​
        }
​
        public static int DoCalc(int[] array)
        {
            if (array.Length == 0)
                return 0;
​
            var result = array
                .OrderBy(z => z)
                .Select((item, index) => new { item, diff = item - index })
                .Pairwise((first, second) => new { first, second })
                .TakeUntil(z => z.first.diff != z.second.diff).LastOrDefault();
​
            if (result.first.diff == result.second.diff)
            {
                return result.second.item + 1;
            }
​
            return result.first.item + 1;
        }
    }
}

Json.NET version: Newtonsoft.Json, Version=11.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed
Original JSON:
{"records":[{"record":{"Ch_ID":"27","User_id":"1","Ch_Name":"test1","Ch_Description":"test1description","Ch_Starttime":""}},{"record":{"Ch_ID":"29","User_id":"1","Ch_Name":"w","Ch_Description":"ww","Ch_Starttime":"12"}},{"record":{"Ch_ID":"30","User_id":"1","Ch_Name":"qq","Ch_Description":"qqqdescription","Ch_Starttime":"1222"}},{"record":{"Ch_ID":"31","User_id":"1","Ch_Name":"v","Ch_Description":"vv","Ch_Starttime":"1"}},{"record":{"Ch_ID":"32","User_id":"1","Ch_Name":"n","Ch_Description":"nnnn","Ch_Starttime":"111"}}]}

Re-serialized data table:
[
  {
    "Ch_ID": "27",
    "User_id": "1",
    "Ch_Name": "test1",
    "Ch_Description": "test1description",
    "Ch_Starttime": ""
  },
  {
    "Ch_ID": "29",
    "User_id": "1",
    "Ch_Name": "w",
    "Ch_Description": "ww",
    "Ch_Starttime": "12"
  },
  {
    "Ch_ID": "30",
    "User_id": "1",
    "Ch_Name": "qq",
    "Ch_Description": "qqqdescription",
    "Ch_Starttime": "1222"
  },
  {
    "Ch_ID": "31",
    "User_id": "1",
    "Ch_Name": "v",
    "Ch_Description": "vv",
    "Ch_Starttime": "1"
  },
  {
    "Ch_ID": "32",
    "User_id": "1",
    "Ch_Name": "n",
    "Ch_Description": "nnnn",
    "Ch_Starttime": "111"
  }
]

Last Run:	4:14:41 am
Compile:	0.219s
Execute:	0.188s
Memory:	853.44kb
CPU:	0.312s

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