Задание

По какому правилу сформирован массив b?

For i:= 1 to N do

b[i]:=a[i]*2;

For i:= 8 downto 1 do

b[i]:=a[i]*2;

for i:=1 to N div 2 do begin

x := a[i];

b[i] := a[N-i+1];

b[N-i+1] := x*2;

end;

for i:=1 to N div 2 do begin

x := a[i];

b[i] := a[N-i+1]*2;

b[N-i+1] := x*2;

end;