BinarySearchRange(Value: String; Index: Integer; Count: Integer): Integer;
Value. Value that should be found.
Index. Initial index of the range, in which the search is performed.
Count. Number of the elements that are used in search.
The BinarySearchRange method executes binary search of the element in array range.
Search is executed in the sorted array range. In case of successful search it returns number of the first found element, otherwise it returns -1.
Sub Main;
Var
StrL: IStringList;
i: Integer;
Begin
StrL:=New StringList.Create;
For i:=0 To 100 Do
StrL.Add("Number "+Math.RandBetweenI(0,100).ToString);
End For;
StrL.Sort;
i:=StrL.BinarySearchRange("Number 20",10,StrL.Count);
End Sub Main;
After executing the example a dynamic array of strings is generated. In the midsection of the array, except for the first and last 10 elements, the 20 value is searched. In case of successful search, the "i" variable contains number of the first found element.
See also: