Sorts the rows of the current matrix by the elements of the specified column in ascending or descending order.
Syntax
| Visual Basic (Usage) | Copy Code |
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Dim instance As Matrix
Dim col As Integer
Dim order As SortOrder
instance.SortRows(col, order) |
Parameters
- col
- An integer specifying the column by which to sort the matrix row.
- order
- A SortOrder enumeration value specifying ascending or descending order.
Example
The following example uses the
SortRows method to sort a matrix and then synchronizes a second matrix using the
ReorderRows method.
| Visual Basic | Copy Code |
|---|
Imports System
Imports Bluebit.MatrixLibrary
Class Test
Public Shared Sub Main()
'Declaring two random matrices
Dim A As Matrix = New Matrix(4, 3)
A.FillRandom()
Dim B As Matrix = New Matrix(4, 3)
B.FillRandom()
Console.WriteLine("Matrix A =")
Console.WriteLine(A)
Console.WriteLine("Matrix B =")
Console.WriteLine(B)
Dim pivots() As Integer
'sort the rows of matrix A in descending order
'by the elements of its second columns (column #1)
A.SortRows(1, SortOrder.Descending, pivots)
'use the pivots to syncronize matrix B with A
B.ReorderRows(pivots)
Console.WriteLine("Matrix A sorted by 2nd column")
Console.WriteLine(A)
Console.WriteLine("Matrix B synchronized with A")
Console.WriteLine(B)
Console.Read()
End Sub
End Class
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| C# | Copy Code |
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using System;
using Bluebit.MatrixLibrary;
class Test
{
static void Main(string[] args)
{
//Declaring two random matrices
Matrix A = new Matrix(4, 3);
A.FillRandom();
Matrix B = new Matrix(4, 3);
B.FillRandom();
Console.WriteLine("Matrix A =");
Console.WriteLine(A);
Console.WriteLine("Matrix B =");
Console.WriteLine(B);
int[] pivots ;
//sort the rows of matrix A in descending order
//by the elements of its second column (column #1)
A.SortRows(1, SortOrder.Descending, out pivots);
//use the pivots to syncronize matrix B with A
B.ReorderRows(pivots);
Console.WriteLine("Matrix A sorted by 2nd column");
Console.WriteLine(A);
Console.WriteLine("Matrix B synchronized with A");
Console.WriteLine(B);
Console.Read();
}
}
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| C++ | Copy Code |
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#include "stdafx.h"
using namespace System;
using namespace Bluebit::MatrixLibrary;
int main()
{
//Declaring two random matrices
Matrix^ A = gcnew Matrix(4, 3);
A->FillRandom();
Matrix^ B = gcnew Matrix(4, 3);
B->FillRandom();
Console::WriteLine("Matrix A =");
Console::WriteLine(A);
Console::WriteLine("Matrix B =");
Console::WriteLine(B);
array<int> ^pivots;
//sort the rows of matrix A in descending order
//by the elements of its second column (column #1)
A->SortRows(1, SortOrder::Descending, pivots);
//use the pivots to syncronize matrix B with A
B->ReorderRows(pivots);
Console::WriteLine("Matrix A sorted by 2nd column");
Console::WriteLine(A);
Console::WriteLine("Matrix B synchronized with A");
Console::WriteLine(B);
Console::Read();
return 0;
}
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Requirements
Target Platforms: Windows 2000, Windows XP, Windows Server 2003 family, Windows Vista, Windows Server 2008 family, Windows 7
See Also