12 13 21 23 32
31
程序:
Program ex501; Var i, n, k : integer; a : array[1..10] of integer; count : longint; Procedure perm2(j : integer); var i, p, t : integer; begin if ( 1 ) then begin for i:=k to n do begin inc(count); t := a[k]; a[k] := a[i]; a[i] := t; for ( 2) do write(a[p]: 1); write(' '); t := a[k]; a[k] := a[i]; a[i] := t; if (count mod 5 = 0) then writeln; end; exit; end; for i:=j to n do begin t := a[j]; a[j] := a[i]; a[i] := t; 3 t:=a[j]; 4 end end; begin writeln('Entry n,k (k<=n):'); read(n, k); count := 0; for i:=1 to n do a[i] := i; 5 end.