ASP.NET 中的锯齿状数组 <-> 多维数组转换

Question

我需要一些帮助来创建以下转换：

需要将一个800*600的多维数组转换成锯齿状数组，然后逆向同样的方法（锯齿状数组与原始多维数组的数据相同）

这可能吗？有什么帮助吗？

Answer 1

我意识到这个问题有点老了，但为了灵活性起见，我稍微修改了方法来计算方法中的数组大小，而不是必须传入它们：

    static object[][] convertToJaggedArray(object[,] multiArray)
    {
        int firstElement = multiArray.GetLength(0);
        int secondElement = multiArray.GetLength(1);

        object[][] jaggedArray = new object[firstElement][];

        for (int c = 0; c < firstElement; c++)
        {
            jaggedArray[c] = new object[secondElement];
            for (int r = 0; r < secondElement; r++)
            {
                jaggedArray[c][r] = multiArray[c, r];
            }
        }
        return jaggedArray;
    }

Answer 2

我已经写了 2 种达到预期结果的方法

        /// <summary>
        /// Converts the contents of a multidimensional array into a Jagged Array
        /// </summary>
        /// <param name="multiArray">the existing multidimensional array you wish to convert</param>
        /// <param name="numOfColumns">number of columns</param>
        /// <param name="numOfRows">number of rows</param>
        /// <returns>Jagged Array representation of multidimensional array passed</returns>
        private int[][] convertToJaggedArray(int [,] multiArray, int numOfColumns, int numOfRows)
        {
            int[][] jaggedArray = new int[numOfColumns][];

            for (int c = 0; c < numOfColumns; c++)
            {
                jaggedArray[c] = new int[numOfRows];
                for (int r = 0; r < numOfRows; r++)
                {
                    jaggedArray[c][r] = multiArray[c, r];
                }
            }

            return jaggedArray;
        }



    /// <summary>
    /// Converts the contents of a Jagged Array into a multidimensional array
    /// </summary>
    /// <param name="jaggedArray">The Jagged Array you wish to convert into a Multidimensional Array</param>
    /// <param name="numOfColumns">number of columns</param>
    /// <param name="numOfRows">number of rows</param>
    /// <returns>Multidimensional Array representation of Jagged Array passed</returns>
    private int[,] convertTo2DArray(int[][] jaggedArray, int numOfColumns, int numOfRows)
    {
        int[,] temp2DArray = new int[numOfColumns, numOfRows];

        for (int c = 0; c < numOfColumns; c++)
        {
            for (int r = 0; r < numOfRows; r++)
            {
                temp2DArray[c, r] = jaggedArray[c][r];
            }
        }

        return temp2DArray;
    } 

然后您只需传递现有的多维或锯齿数组，它就会以不同的数组类型返回相同的内容。例如

//1. convert to Jagged print out, grid 1 is the existing 2d array instance here
int[][] jaggedGrid = convertToJaggedArray(grid1, numOfCols, numOfRows);

//2. Take the jagged and re-convert to multi array
int[,] temp = convertTo2DArray(jaggedGrid, numOfCols, numOfRows);

您还可以使用以下循环检查并打印出任一内容

// Print out all elements in the jagged array to debugger.
        for (int c = 0; c < jaggedGrid.Length; c++)
        {
            int[] innerArray = jaggedGrid[c];
            for (int r = 0; r < innerArray.Length; r++)
            {
                System.Diagnostics.Debug.WriteLine("In Jagged Array\nElement No ({0},{1})={2}", c, r, jaggedGrid[c][r] + "\n");
            }
        }

//print out all values in temp value 2d array to debugger
        for (int c = 0; c < temp.GetLength(0); c++)
        {
            for (int r = 0; r < temp.GetLength(1); r++)
            {
                System.Diagnostics.Debug.WriteLine("In temp array\nElement No ({0},{1})={2}", c, r, temp[c, r] + "\n");
            }
        }

Answer 3

我做了一些更改，因为 Multiarray 从索引 1 开始，而 Jagged 数组从索引 0 开始。

static object[][] convertToJaggedArray(object[,] multiArray, int firstElement, int secondElement)
    {
        object[][] jaggedArray = new object[firstElement][];

        for (int c = 0; c < firstElement; c++)
        {
            jaggedArray[c] = new object[secondElement];
            for (int r = 0; r < secondElement; r++)
            {
                jaggedArray[c][r] = multiArray[c+1, r+1];
            }
        }
        return jaggedArray;
    }