C#数组中的Rank，GetUpperBound(), GetLength()

Rank-数组的秩，一维数组的Rank=1；二维数组的Rank=2；

GetUpperBound()--获取每一维的索引的上限，

比如int[4,5], 那么GetUpperBound(0) = 3; GetUpperBound(1) = 4 ;

所以

对于二维数组来说

GetUpperBound(0)+1=行数；

GetUpperBound(1)+1=列数

然后就是

GetLength(0) = 行数，

GetLength(1) = 列数

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;//数组的合并和拆分
namespace ArrayMergeSplit
{internal class Program{static void Main(string[] args){//将两个一维数组合并成维一个一维数组int[] arr1 = new int[] { 1, 2, 3, 4, 5 };int[] arr2 = new int[] { 6, 7, 8, 9, 10 };Console.WriteLine("原始的两个数组：");Console.WriteLine("数组arr1的元素为：");foreach (int n1 in arr1)Console.Write(n1 + " ");Console.WriteLine();Console.WriteLine("数组arr2的元素为:");foreach (int n2 in arr2)Console.Write(n2 + " ");Console.WriteLine();int[] arr3 = new int[arr1.Length + arr2.Length];for (int i = 0; i < arr3.Length; i++){if (i < arr1.Length)arr3[i] = arr1[i];else if (i >= arr1.Length)arr3[i] = arr2[i - arr1.Length];}Console.WriteLine("合并后的数组为：");foreach (int n3 in arr3)Console.Write(n3 + " ");Console.WriteLine();//将两个一维数组合并成一个二位数组int k = arr1.Length;int m = arr2.Length;int row = 2;int col = 0;if (k > m){col = k;}elsecol = m;int[,] arr4 = new int[row, col];for (int x = 0; x < arr4.GetLength(0); x++){for (int y = 0; y < arr4.GetLength(1); y++){if (y < arr1.Length && x == 0)arr4[x, y] = arr1[y];else if (y < arr2.Length && x == 1)arr4[x, y] = arr2[y];}}Console.WriteLine("合成的二维数组是：");for (int ii = 0; ii < arr4.GetLength(0); ii++){for (int jj = 0; jj < arr4.GetLength(1); jj++){Console.Write(arr4[ii, jj] + " ");}Console.WriteLine();}//另外一种实现方法int[,] arr5 = new int[row, col];for (int i = 0; i < arr5.Rank; i++){//Array.Rank属性返回数组的维数，也就是行数switch (i){case 0:{for (int j = 0; j < arr1.Length; j++)arr5[i, j] = arr1[j];break;}case 1:{for (int j = 0; j < arr2.Length; j++)arr5[i, j] = arr2[j];break;}}}Console.WriteLine("合并后的二维数组为：");for (int i = 0; i < arr5.Rank; i++){//Rank获取数组的维数//arr5.GetUpperBound(arr5.Rank-1)获取数组指定维度的上限for (int j = 0; j <= arr5.GetUpperBound(arr5.Rank-1); j++){Console.Write(arr5[i, j] + " ");}Console.WriteLine();}//GetUpperBound() 方法在 C# 中用于获取数组维度的上限//对于一维数组，它基本上返回数组的上限索引，即数组的长度减去1。//对于多维数组，它返回指定维度的上限。Console.WriteLine("数组的维数：");Console.WriteLine(arr5.Rank);//结果是2Console.WriteLine("GetUpperBound()的用法：");//Console.WriteLine(arr5.GetUpperBound(arr5.Rank));//IndexOutOfRange异常//用GetUpperBond()获去一维数组上限索引int[] arr11 = new int[] { 1, 2, 3, 4, 5 };int[] arr22 = new int[] { 6, 7, 8, 9, 10 };Console.WriteLine("一维数组的秩维：{0}", arr1.Rank);Console.WriteLine("获取一维数组的上限：");Console.WriteLine(arr11.GetUpperBound(0));Console.WriteLine(arr22.GetUpperBound(0)); //GetUpperBound()获得多维数组指定维度的上限Console.WriteLine("获取二维数组arr5的GetUpperBound()值");for(int i=arr5.Rank-1; i>=0; i--){Console.WriteLine("arr5.GetUpperBound({0})= {1}", i, arr5.GetUpperBound(i));}Console.WriteLine();Console.WriteLine("数组arr5的元素为：");for(int i =0; i<arr5.GetLength(0); i++){for(int j=0; j<arr5.GetLength(1); j++){Console.Write(arr5[i, j]+ " ");}Console.WriteLine() ;}Console.WriteLine(arr5.GetUpperBound(0));//arr5[2,5],所以此为1Console.WriteLine(arr5.GetUpperBound(1));//arr5[2,5],所以此为4Console.WriteLine();Console.WriteLine();Console.WriteLine();//测试2int[,] multiArray = new int[3, 5];Console.WriteLine("二维数组的秩是多少？" + multiArray.Rank);int dim0UpperBound = multiArray.GetUpperBound(0); // 返回 2int dim1UpperBound = multiArray.GetUpperBound(1); // 返回 4//GetUpperBound()获得每一维索引的上限Console.WriteLine(dim0UpperBound);Console.WriteLine(dim1UpperBound);//所以对于二维数组来说，arr5.GetUpperBound(0)就是第一维索引的上限，也就是行数-1//arr5.GetUpperBound(1)就是第二维的索引的上限，也就是列数-1；}}
}