Pergunta de entrevista da empresa A9.com

You are given an arithmetic expression {(5+3)*(24/6)} . Compute it using any data structure. Put the expressions character by character in a data structure, retrieve them back and compute the calculation. You are not allowed to use any other data structure than you select. So no more array or stack to store the answer for (5+3) or (24/6). You can store it in the same data structure you chose before and store temporarily in it for future reference.