function range(start,end){
             // bloco para numeros ;

             if (typeof start === 'number' && typeof end === 'number') {
                 let ar = [];
                 for (let i = start; i <= (end); i++) {
                     ar[ar.length] = i;
                 }
                 return ar;
             }
             //bloco para String
             else if(typeof start === 'string' && typeof end === 'string'){
                 let arr = ['A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'];
                 start = start.toUpperCase();
                 end = end.toUpperCase();
                 vali = [0,0];
                 p = [0,0];
                 for (i = 0;i <= (arr.length - 1);i++){
                    if(start === arr[i]){
                        vali[0] = 1;
                        p[0] = arr.indexOf(arr[i]);
                    }

                    if(end === arr[i]){
                        vali[1] = 1;
                        p[1] = arr.indexOf(arr[i]);
                    }
                 }
                 if(vali[0] && vali[1]){
                     r = [];
                     for (i = p[0];i <= (p[1]);i++){
                         r[r.length] = arr[i];
                     }
                     return r;
                 }else {
                     throw new UserException("valor invalido");
                 }
             }


}