Question

在我的阵列上，在第40行，我的边界在数组之外，但我不知道如何格式化，因为这是我的第一个带有多维数组的程序。请帮我。谢谢！（第40行是array[i, 0] = randomArray.Next(0, 100);）

namespace Exercise6
{
    class Program
    {
        static void Main(string[] args)
        {

            OtherClass aTable = new OtherClass(); //instantiate class

            Console.WriteLine("How many rows do you want your two-dimensional array to be?");
            aTable.SRows = Console.ReadLine(); //reads input for how many rows that the user would like
            aTable.IntRows = int.Parse(aTable.SRows); //convert rows to int

            Console.WriteLine("Thanks you! How many columns would you like your two-dimensional arry to be?");
            aTable.SColumns = Console.ReadLine(); //reads input for how many columns that the user would like
            aTable.IntColumns = int.Parse(aTable.SColumns); //convert columns to int

            //set two dimensional array based upon the size that the user has requested

            int[ , ] array = new int[aTable.IntColumns, aTable.IntRows];

            Random randomArray = new Random(); //call to random class to ask for random numbers

            for (int i = 0; i <= aTable.IntColumns; i++) // rows
            {
                array[i, 0] = randomArray.Next(0, 100); // for every value in each row, insert a random number
            }
            //both arrays here are overloaded. See this site to see if can get help. Site is below after last close loop
            for (int y = 0; y <= aTable.IntRows; y++) // columns
            {
                array[y, y] = randomArray.Next(0, 100);
            }

            Console.WriteLine(array);


        }
    }
}

namespace Exercise6
{
    class OtherClass
    {
        private string sRows;

        public string SRows { get; set; }

        private int intRows;

        public int IntRows { get; set; }

        private string sColumns;

        public string SColumns { get; set; }

        private int intColumns;

        public int IntColumns { get; set; }

    }
}

Answer 1

将循环条件更改为i < aTable.IntColumns

循环从0开始并转到aTable.IntColumns - 1

的值

并且代码变为

for (int i = 0; i < aTable.IntColumns; i++)
{
    array[i, 0] = randomArray.Next(0, 100); 
}

Answer 2

由于数组基于零，因此无法达到最大值：

// This line is incorrect
for (int i = 0; i <= aTable.IntColumns; i++)

那一行应该是：

for (int i = 0; i < aTable.IntColumns; i++)

这将让它从0转到aTable.IntColumns-1，它们是aTable.IntColumns长度数组的有效索引。行也是如此。

Answer 3

C＃数组使用零相对偏移量作为其索引。这意味着对于长度为 n 的数组，其索引 i 的域为0 <= i <= n-1。 100个元素的数组的索引范围为0-99。如果您尝试使用随机值填充m * n数组。

如果您的作业是填充具有随机值的数组（似乎很可能），您需要执行以下操作：

for ( int i=0 ; i < aTable.IntRows ; i++ ) // rows
{
  for ( int j= 0 ; i < aTable.IntColumns ; j++ )
  {
    array[i,j] = randomArray.Next(0,100); // for every value in each row, insert a random number
  }
}

您可能还注意到您的注释与您的代码不匹配：您正在迭代行并检查列限制，反之亦然。

Answer 4

错误在for循环中：

for (int i = 0; i < aTable.IntColumns; i++) // rows
{
    array[i, 0] = randomArray.Next(0, 100); // for every value in each row, insert a random number
}

i < aTable.IntColumns应该是停止标准

我的界限在阵列之外怎么样？

4 个答案: