using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
 
// LINQで二次元ジャグ配列をコピーする
 
namespace Linq2ch918
{
  class Program
  {
    static void Main(string[] args)
    {
      int[][] a1 = { new int[]{ 1, 2, 3 }, new int[]{ 4, 5 }, new int[]{ 6, 7, 8, 9, 10 } };
      int[][] a2 = { new int[3], new int[2], new int[5] };
      Enumerable.Range(0, a1.Length).SelectMany(i => Enumerable.Range(0, a1[i].Length), (x, y) => new { x, y })
        .Select(xy => new { xy.x, xy.y }).Select(xy => { return a2[xy.x][xy.y] = a1[xy.x][xy.y]; }).ToList(); // 即時実行
      foreach (var i in a2) {
        foreach (var j in i)
          Console.Write(j + " ");
        Console.WriteLine();
      }
    }
  }
}

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