Q.14: How to convert a two-dimensional array to a one-dimensional array?

 Ans.: The user will input a 2-D array (matrix) and we need to convert it to a 1-D array. We will create 1-D array column wise.

• input: { { 1, 2, 3 }, { 4, 5, 6 } }, output: 1 4 2 5 3 6

internal static void MultiToSingle(int[,] array)

{

int index = 0;

int width = array.GetLength(0);

int height = array.GetLength(1);

int[] single = new int[width * height];

for (int y = 0; y < height; y++)

{

for (int x = 0; x < width; x++)

{

single[index] = array[x, y];

Console.Write(single[index] + " ");

index++;

}

}

}

This question can also be asked to form 1-D array row wise. In this case just swap the sequence of thefor loops as below. The output will be 1 2 3 4 5 6 for the input matrix mentioned above.

for (int x = 0; x < width; x++ )

{

for ( int y = 0; y < height; y++)

{

single[index] = array[x, y];

Console.Write(single[index] + " ");

index++;

}

}