把布林主图公式中的短买做成选股

编写要求：

把布林主图公式中的短买做成选股

股票网解答：

VAR1:=(C>REF(C,1) AND C>REF(C,2));
VARD:=(C<REF(C,1) AND C<REF(C,2));
VARE:=(REF(VARD,1) AND C>=REF(C,1) AND C<=REF(C,2));
VARF:=(REF(VARE,1) AND C<=REF(C,1) AND C>=REF(C,2));
VAR10:=(REF(VARF,1) AND C>=REF(C,1) AND C<=REF(C,2));
VAR11:=(REF(VAR10,1) AND C<=REF(C,1) AND C>=REF(C,2));
VAR12:=(REF(VAR11,1) AND C>=REF(C,1) AND C<=REF(C,2));
VAR13:=(REF(VAR12,1) AND C<=REF(C,1) AND C>=REF(C,2));
VAR14:=(REF(VAR13,1) AND C>=REF(C,1) AND C<=REF(C,2));
VAR15:=(REF(VAR14,1) AND C<=REF(C,1) AND C>=REF(C,2));
VAR16:=(REF(VAR15,1) AND C>=REF(C,1) AND C<=REF(C,2));
VAR17:=(REF(VAR16,1) AND C<=REF(C,1) AND C>=REF(C,2));
VAR18:=(REF(VAR17,1) AND C>=REF(C,1) AND C<=REF(C,2));
短买:((REF(VARD OR VARE OR VARF OR VAR10 OR VAR11 OR VAR12 OR VAR13 OR VAR14 OR VAR15 OR VAR16 OR VAR17 OR VAR18,1)) AND VAR1);