二维数组 规则数组和交叉数组

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication5
{
class Program
{
static void Main(string[] args)
{
#region 严格上的二维数组 12行31列 行列均已经固定
string[,] ss = new string[12, 31];
for (int i = 0; i < 12; i++)
{
for (int j = 0; j < 31; j++)
{
ss[i, j] = i + "_" + j + " " + "";

}
}
for (int i = 0; i < 12; i++)
{
for (int j = 0; j < 31; j++)
{
Console.Write(ss[i, j]);

}
Console.WriteLine();
}
#endregion

#region 交叉数组 行固定 列不固定 每行均是一个一维数组 arr[i]=new string[length]的arr[i]代表一维数组的数组的首地址 new string[length]是为一维数组申请空间
string[][] arr = new string[5][];

arr[0] = new string[5];
arr[0][0] = "0";
arr[0][1] = "1";
arr[0][2] = "2";
arr[0][3] = "3";
arr[0][4] = "4";

arr[1] = new string[4];
arr[1][0] = "0";
arr[1][1] = "1";
arr[1][2] = "2";
arr[1][3] = "3";

arr[2] = new string[3];
arr[2][0] = "0";
arr[2][1] = "1";
arr[2][2] = "2";

arr[3] = new string[2];
arr[3][0] = "0";
arr[3][1] = "1";

arr[4] = new string[1];
arr[4][0] = "0";

for (int i = 0; i < 5; i++)
{
for (int j = 0; j < arr[i].Length; j++)
{

Console.WriteLine(string.Format("arr[{0}][{1}]=" + arr[i][j], i, j));
}
Console.WriteLine();
}
#endregion

Console.WriteLine("二维数组的hash地址"+arr.GetHashCode());
for (int i = 0; i < arr.Length; i++)
{
Console.WriteLine(string.Format("arr[{0}]的hash地址{1}：",i,arr[i].GetHashCode()) );
}
Console.ReadKey();

}
}
}