I have an array of operators [*, -, +, %] and another array for variables [FE, GE, PRD, RON] . In an input text, the user with both arrays can create formulas that is, FE + GE * RON for example.
How can I validate that the formula is well armed with operators and variables of both arrangements?
If someone has a suggestion it can be with JavaScript or C #
Beforehand, thank you very much
You can make a replace of the symbols to then be able to make a split and then take everything except your arrangement
var arregloVariables = new string[] { "FE", "GE", "PRD", "RON" };
var formula = "FE+GE*RONI";
var stringSinoperadores = formula.Replace('*', ',').Replace('-', ',').Replace('+', ',').Replace('%', ',');
var split = stringSinoperadores.Split(',');
var res = split.Except(arregloVariables);
Console.WriteLine(res.Any() ? "Formula incorrecta" : "Formula correcta");