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Ingy döt Net 2023-07-01 11:58:00 -04:00
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with Ada.Text_IO; use Ada.Text_IO;
with Ada.Numerics.Discrete_Random;
procedure Test_Bogosort is
generic
type Ordered is private;
type List is array (Positive range <>) of Ordered;
with function "<" (L, R : Ordered) return Boolean is <>;
procedure Bogosort (Data : in out List);
procedure Bogosort (Data : in out List) is
function Sorted return Boolean is
begin
for I in Data'First..Data'Last - 1 loop
if not (Data (I) < Data (I + 1)) then
return False;
end if;
end loop;
return True;
end Sorted;
subtype Index is Integer range Data'Range;
package Dices is new Ada.Numerics.Discrete_Random (Index);
use Dices;
Dice : Generator;
procedure Shuffle is
J : Index;
Temp : Ordered;
begin
for I in Data'Range loop
J := Random (Dice);
Temp := Data (I);
Data (I) := Data (J);
Data (J) := Temp;
end loop;
end Shuffle;
begin
while not Sorted loop
Shuffle;
end loop;
end Bogosort;
type List is array (Positive range <>) of Integer;
procedure Integer_Bogosort is new Bogosort (Integer, List);
Sequence : List := (7,6,3,9);
begin
Integer_Bogosort (Sequence);
for I in Sequence'Range loop
Put (Integer'Image (Sequence (I)));
end loop;
end Test_Bogosort;