In this exercise you are to write a Hack assembly language program to compute the sum:sum $=$ n $+($n$-1)+$ n$-2)+..+3+2+1.$ Here nis stored in RAM$[0]$ and your resultantsum should be stored in RAM$[1].$ Begin with sum $=$ n and decrement in in each step.a$)$Draw a flowchart and write the pseudo code to show the steps in your solution.b$)$ Translate your pseudo code into Hack assembly language instructions for your program.