string[][]和string[,] 以及 int[][]和int[,]

string[][]和string[,]

http://www.codewars.com/kata/56f3a1e899b386da78000732/train/csharp

Write a function

partlist

that gives all the ways to divide a list (an array) of at least two elements in two non-empty parts.

Each two non empty parts will be in a pair (or an array for languages without tuples)

Each part will be in a string

Elements of a pair must be in the same order as in the original array.

Example:

a = ["az", "toto", "picaro", "zone", "kiwi"]

[[az, toto picaro zone kiwi], [az toto, picaro zone kiwi], [az toto picaro, zone kiwi], [az toto picaro zone, kiwi]]

string[][] 一维数组，数组元素是string[]

string[,] 二维数组，数组元素是string

using System.Linq;

public class PartList
{
public static string[][] Partlist(string[] input)
{
var output = new string[input.Length - 1][];
for (int i = 0; i < input.Length - 1; i++)
{
var temp = input.ToArray();
temp[i] = $"{input[i]},";
output[i] = new[] { string.Join(" ", temp) };
}
return output;
}
}

int[][]和int[,]

https://www.codewars.com/kata/adding-values-of-arrays-in-a-shifted-way/train/csharp

int[][] 一维数组，数组元素是int[];这个的行是固定的，但是没有固定的列，是锯齿的

int[,] 二维数组，数组元素是int;二维数组是一个矩阵，行和列是固定的

http://stackoverflow.com/questions/20050571/c-sharp-indexoutofrangeexception-when-calling-array-getlength1-for-a-2d-array

It's not a 2D array. TileData[][] is a jagged array, TileData[,] is a 2D array then, in your case, GetLength(1) will always fail because tile has only one dimension.