public void Test1() { var exp = "99-(12+34*56)/78"; XTrace.WriteLine("表达式:{0}", exp); var me = new MathExpression(); var expRpn = me.ToExpression(exp); var str = expRpn.Join(","); XTrace.WriteLine("逆波兰:{0}", str); Assert.Equal("99,12,34,56,*,+,78,/,-", str); var rs = me.Complie(expRpn); XTrace.WriteLine("结 果:{0}", rs); Assert.Equal(74.43589743589743, rs); }