public static object ComputeExpression(string sExpression, string[] mapVar, string[] mapValue)
 {
     return(Arithmetic.ComputePostfix(Arithmetic.ConvertToPostfix(Arithmetic.ConvertExpression(Arithmetic.ConvertExpression(sExpression), mapVar, mapValue))));
 }
 public static object ComputeExpression(string sExpression)
 {
     return(Arithmetic.ComputePostfix(Arithmetic.ConvertToPostfix(Arithmetic.ConvertExpression(sExpression))));
 }