MatrixInt.SortDescend Method

Overload List

#	Signature	Description
1	function SortDescend: TMtxInt;	Sorts the elements in a matrix row(s) in descending order.
	└ indexed: function SortDescend(const Index: Integer; const Len: Integer): TMtxVecInt;
2	function SortDescend(Col: Integer): TMtxInt;	Performs row based sort in descending order. The Col parameter defines the column based on which the rows are compared with each other.
3	function SortDescend(const DstSortIdx: TMtxVecInt; const SortIdxIndex: Integer; const Index: Integer; const Len: Integer): TMtxVecInt;	Sort all calling vector elements in descending order in-place.

Overload 1: function SortDescend: TMtxInt;

Sorts the elements in a matrix row(s) in descending order.

Result: stored in self (calling object), returns self for chaining

Remarks:

Sorts the elements in calling matrix row(s) in descending order in-place. If the calling matrix is complex, then complex values are first compared by the absolute value and then by the argument.

Note
Each row is sorted independently from the other.

Examples

var  A: TMtxInt;
begin
    CreateIt(A);
    try
        A.SetIt(2,2,[1,2,
            4,2]);
        A.SortDescend;
        // A becomes:
        // [2,1]
        // [4,2]
    finally
        FreeIt(A);
    end;
end;

See Also: MatrixInt.SortAscend

Indexed: function SortDescend(const Index: Integer; const Len: Integer): TMtxVecInt;

Sort calling vector elements [Index..Index+Len-1] in descending order in-place.

#	Name	Type	Description
1	Index	Integer	start index
2	Len	Integer	element count

Result: stored in self (calling object), returns self for chaining

Overload 2: function SortDescend(Col: Integer): TMtxInt;

Performs row based sort in descending order. The Col parameter defines the column based on which the rows are compared with each other.

#	Name	Type	Description
1	Col	Integer

Result: stored in self (calling object), returns self for chaining

Overload 3: function SortDescend(const DstSortIdx: TMtxVecInt; const SortIdxIndex: Integer; const Index: Integer; const Len: Integer): TMtxVecInt;

Sort all calling vector elements in descending order in-place.

#	Name	Description
1	DstSortIdx	After execution stores sorted values indices.
2	SortIdxIndex	The starting index for the DstSortIdx parameter.
3	Index	The starting index at which to start the sort.
4	Len	The number of elements to sort starting from including zero-based Index.

Result: stored in self (calling object), returns self for chaining

Returns: calling vector, storing sorted values.

Remarks:

Size of DstSortIdx and calling vector are adjusted automatically.