2. Write an algorithm to insert and remove a node at the beginning of the circular linked list. [4 marks] 3. Compute the total computing time T(n) of the following block of statements. [ 4 Marks] Initialize a to 5 Initialize b to 10 Initialize i to 1 while(i(a>b) Display "a is greater than b " else Display "b is greater than a " End if Increment i by 1 End While