export function sum(values) {
  // implementar logica aqui
  if (toString.call(values) !== "[object Array]")
    return false;
      
            var total =  0;
            for(var i=0;i<values.length;i++)
              {                  
                if(isNaN(values[i])){
                continue;
                 }
                  total += Number(values[i]);
               }
             return total;
}