I need it's solution.

a) [5 marks]Using stack convert the following expression to prefix form: XYZI+EJ%KF+ b) [10 marks] Write a function called copyStick to copy the elements of an integer type stack, s1, into another stack, $2, where both s1 and s2 are reference parameters, and s2 is initially empty. copyStack is a global function which is only allowed to use the standard stack ADT functions: push, pop, top (or peek), and empty. Furthermore, copyStack cannot create an extra array or any other data structure, but it can use one or two extra variables. When the function ends, s2 contains exactly the same elements as s1, and s1 is exactly as it was initially. Following picture shows an example, before and after copyStack: Before copyStack After copyStack