Shift 2 dimension array rows

diamond diamond

Hi all,

I have a 2 dimensional array, I want shift the value of rows :

int [,] s=new int [2,2];

s= {(1,0,0),(0,1,0),(0,0,1)}

when I shift this array rows like below:

s={(0,1,0),(0,0,1),(0,0,0)}

is it possible by array.copy? and how?

5 Replies

Know the answer? Post it — somebody with the same question will find it here.

Vulpes13y ago
Accepted answer
Try this:

using System;

class Program
{
static void Main()
{
int[,] s = {{1,0,0},{0,1,0},{0,0,1}};
ShiftRows(s);

// check it worked
Console.Write("{(");
for(int i = 0; i < 3; i++)
{
for(int j = 0; j < 3; j++)
{
Console.Write(s[i,j]);
if (j < 2) Console.Write(",");
}
Console.Write(")");
if (i < 2) Console.Write(",(");
}
Console.WriteLine("}");
Console.ReadKey();

}

static void ShiftRows(int[,] s)
{
for(int i = 0; i < s.GetLength(0); i++)
{
// shift row data to right, losing data in last column
for(int j = s.GetLength(1) - 1; j >= 1; j--)
{
s[i,j] = s[i, j - 1];
}
s[i, 0] = 0; // insert 0 in first column, say
}
}
}
0
Vulpes13y ago
GetLength(0) gets the length of the first dimension of the array (number of rows) and GetLength(1) gets the length of the second dimension of the array (number of columns).

The Length property still works for a 2 dimensional array but returns the total number of elements in the array i.e. 9 in this example.
0
diamond diamond13y ago
Thanks Vulpes,

Let me know why use s.Get length(0) and somewhere Get length(1)?
0
diamond diamond13y ago
my array is sensitive for time in every 5 min its data shift to right and new data is written in last left column.
0
Iftikar Hussain13y ago
Hi,
Not clear about your query. What does mean by shifting here?

Regards,
Iftikar
0