| Description |
Reverses the sequence of elements in TheArray, a single dimension array.
If only a subset of the elements is to be reversed, then the optional StartIndex and Count parameters can specify a subset range.
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| | Notes | Static methods are not methods of an object - they are simply class functions or procedures available at any time.
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| Microsoft MSDN Links |
System
System.Array
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| Reversing all elements in an array |
program Project1;
{$APPTYPE CONSOLE}
var
myArray : System.Array;
i : Integer;
begin
// Create a 4 element single dimension array of strings
myArray := System.Array.CreateInstance(TypeOf(String), 4);
// Fill the array with values
myArray.SetValue('---', 0);
myArray.SetValue(' ---', 1);
myArray.SetValue(' ---', 2);
myArray.SetValue(' ---', 3);
// Display the array contents
for i := 0 to myArray.Length-1 do // Arrays are always 0 based
Console.WriteLine('myArray[{0}] = {1}',
i.ToString, myArray.GetValue(i));
// Reverse the array order
Console.WriteLine;
Console.WriteLine('Reversing the array');
Console.WriteLine;
System.Array.Reverse(myArray);
// Display the array contents
for i := 0 to myArray.Length-1 do
Console.WriteLine('myArray[{0}] = {1}',
i.ToString, myArray.GetValue(i));
Console.ReadLine;
end.
| | Show full unit code | myArray[0] = ---
myArray[1] = ---
myArray[2] = ---
myArray[3] = ---
Reversing the array
myArray[0] = ---
myArray[1] = ---
myArray[2] = ---
myArray[3] = ---
| | | Reversing just a subset of array elements | program Project1;
{$APPTYPE CONSOLE}
var
myArray : System.Array;
i : Integer;
begin
// Create a 4 element single dimension array of strings
myArray := System.Array.CreateInstance(TypeOf(String), 5);
// Fill the array with values
myArray.SetValue('---', 0);
myArray.SetValue(' ---', 1);
myArray.SetValue(' ---', 2);
myArray.SetValue(' ---', 3);
myArray.SetValue(' ---', 4);
// Display the array contents
for i := 0 to myArray.Length-1 do // Arrays are always 0 based
Console.WriteLine('myArray[{0}] = {1}',
i.ToString, myArray.GetValue(i));
// Reverse the array order
Console.WriteLine;
Console.WriteLine('Reversing the middle 3 elements');
Console.WriteLine;
System.Array.Reverse(myArray, 1, 3);
// Display the array contents
for i := 0 to myArray.Length-1 do
Console.WriteLine('myArray[{0}] = {1}',
i.ToString, myArray.GetValue(i));
Console.ReadLine;
end.
| | Show full unit code | myArray[0] = ---
myArray[1] = ---
myArray[2] = ---
myArray[3] = ---
myArray[4] = ---
Reversing the middle 3 elements
myArray[0] = ---
myArray[1] = ---
myArray[2] = ---
myArray[3] = ---
myArray[4] = ---
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