56 lines
924 B
ObjectPascal
56 lines
924 B
ObjectPascal
// Áûñòðàÿ ñîðòèðîâêà ×. Õîàðà
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uses ArrayLib;
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/// Áûñòðàÿ ñîðòèðîâêà
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procedure QuickSort(a: array of integer);
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/// Ðàçäåëåíèå a[l]..a[r] íà ÷àñòè a[l]..a[q] <= a[q+1]..a[r]
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function Partition(l,r: integer): integer;
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begin
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var i := l - 1;
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var j := r + 1;
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var x := a[l];
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while True do
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begin
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repeat
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Inc(i);
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until a[i]>=x;
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repeat
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Dec(j);
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until a[j]<=x;
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if i<j then
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Swap(a[i],a[j])
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else
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begin
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Result := j;
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exit;
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end;
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end;
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end;
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/// Ñîðòèðîâêà ÷àñòåé
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procedure sort(l,r: integer);
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begin
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if l>=r then exit;
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var j := Partition(l,r);
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sort(l,j);
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sort(j+1,r);
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end;
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begin
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sort(0,a.Length-1)
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end;
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const n = 20;
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var a: array of integer;
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begin
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CreateRandom(a,n);
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writeln('Äî ñîðòèðîâêè: ');
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WriteArray(a);
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QuickSort(a);
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writeln('Ïîñëå ñîðòèðîâêè: ');
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WriteArray(a);
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end.
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