title: How can we convert Prefix to Postfix expression ( without using expression tree)?
body: <p>By using Stack data structure, we can easily convert "Infix to Postfix" and "infix to Prefix" but I can't convert Prefix to postfix.</p>
  
  <p>yes, we can convert prefix to infix then infix to postfix. but I want direct conversion from prefix to postfix.</p>
  
  <p>Is there any feasible solution (not expression tree) ?</p>