(Solved): please do asap and all if you can will thumbs up, need by tomorrow  P1) Demonstrate how underst ...

P1) Demonstrate how understanding of the concept programming languages will improve the quality of your code. (20 points) P2) You are given a recursive function Sum(O in Java which computers a summation. ( 30 points) a Explain what type of problem this function may cause. You should use your understanding of runtime structure. b. Rewrite this function in non-recursive way in order to avoid such problem. P3) Answer the following questions ( 30 point) w) In our runtime structure model of stack-based languages, we store all local variables of a function into its activation record. What kind of problem(s) will happen if we store all local variables out of activation record (such as the top of data memory space)? Explain. b) Stack-based languages stores activation-records into a Stack. What if we use Queue to store them instead of Stack? What kind of problem(s) will happen? Explain. e. Discuss about advantages / Disadvantages of using. cxception handling in Java P4) Answer the following scope related questions (20 points) (a) What are the values of \( \mathrm{x} \) and \( \mathrm{y} \) at point \( \mathrm{A} \) ? (b) What are the values of \( x \) and \( y \) at point \( B \) ? (c) What are the values of \( x \) and \( y \) at point \( C \) ? P5) Given grammar in BNF, answer the following questions (20 points) \) - \) (i8) * \( <\operatorname{var}>8 \mathrm{~A}|\mathrm{~B}| \mathrm{C} \mid \mathrm{D} \) (a) Rewrite this grammar in EBNF (b) Show a derivation for string \( \mathrm{C}-\mathrm{D} * \mathrm{~A}+\mathrm{B}-\mathrm{D} / \mathrm{B} \) P6) Given Fortran code, complete the code memory map as well as the activation record. ( 30 points) P7) Given C language Code, Complete the code \& data memory