I am programming in C# and I currently have the 2D array below:
int[,] results = {
{ 4, 7, 9, 3, 8, 6, 4},
{ 4, 8, 6, 4, 8, 5, 6},
{ 7, 3, 9, 2, 2, 1, 8}
};
I'd like to create a loop or function which outputs 3 separate arrays, copying the values from each row.
eg output:
row1 = {4, 7, 9, 3, 8, 6, 4}
row2 = {4, 8, 6, 4, 8, 5, 6}
etc
I have been able to copy the values of each row into a separate string which is then written in the console with this line of code:
for (int a = 1; a < (rows+1); a++)
{
for (int b = 1; b < (columns+1); b++)
{
scores = scores + " " + results[(a-1), (b-1)];
}
scores = "";
}
you need a convertion from a 2D array into a jagged array
int[,] array = { { 4, 7, 9, 3, 8, 6, 4},
{ 4, 8, 6, 4, 8, 5, 6},
{ 7, 3, 9, 2, 2, 1, 8}
};
int[][] jagged = new int[array.GetLength(0)][];
for (int i = 0; i < array.GetLength(0); i++)
{
int[] row = new int[array.GetLength(1)];
for (int j = 0; j < array.GetLength(1); j++)
{
row[j] = array[i, j];
}
jagged[i] = row;
}
int[] row1 = jagged[0];
int[] row2 = jagged[1];
int[] row3 = jagged[2];
difference between multidimensional array and jagged array:
//multidimensional array
int[,] multi = { { 7, 2, 6, 1 }, { 3, 5, 4, 8 } };
//array of arrays (jagged array)
int[][] jagged = new int[][] { new int[] { 7, 2, 6, 1 }, new int[] { 3, 5, 4, 8 } };
LINQ variant:
var m0 = new int[,] { { 1, 2 }, { 3, 4 } };
var rows = Enumerable.Range(0, m0.GetLength(0)).Select(i => Enumerable.Range(0, m0.GetLength(1)).Select(j => m0[i, j]));
foreach (var r in rows) Console.WriteLine(string.Join(" ", r));
Console.ReadLine();
a 'smarter' variant (flattern an array and take by N values):
var rows = m0.Cast<int>().Select((v, i) => new { i = i / m0.GetLength(1), v }).GroupBy(e => e.i).Select(g => g.Select(e => e.v));
Just a piece of cake using JsonSoft as
var json = JsonConvert.SerializeObject(results);
int[][] arr = JsonConvert.DeserializeObject<int[][]>(json);
int[] arr1 = arr[0];
int[] arr2 = arr[1];
int[] arr3 = arr[2];
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.