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- const
- n = 5;{ количество элементов в перестановке}
- var
- a: array[1..n] of integer;
- index: integer;
- procedure generate(l, r: integer);
- var
- i, v: integer;
- begin
- if (l = r) then
- begin
- for i := 1 to n do write(a[i], ' ');
- writeln;
- end
- else
- begin
- for i := l to r do
- begin
- v := a[l]; a[l] := a[i]; a[i] := v; {обмен a[i],a[j]}
- generate(l + 1, r); {вызов новой генерации}
- v := a[l]; a[l] := a[i]; a[i] := v; {обмен a[i],a[j]}
- end;
- end;
- end;
- begin
- for index := 1 to N do A[index] := index;
- generate( 1, n );
- end.
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