3. [10 marks] Show how a stack can be used to evaluate the postfix expression 24 * 3+15-* - The first two steps are given below: 1. Push 2 2. Push 4 4. [10 marks] Give the pseudocode to find the second largest value into an unsorted singly linked list such as the one below. head -- 717 20:513 1 5. [10 marks] Show the steps of QuickSort (as given in the lectures) for the following array of values. Indicate the total number of comparisons made. (Hint: Each movement of Ix or rx requires a comparison with the pivot.) 3 2 5 1 0 7 3 5 0 6. [10 marks] Given the circular array-based queue below, show the result after each of the following operations (executed one after the other). If an operation would result in an error, indicate the error and then skip that operation and continue with the next one. Part (a) is done for you below. Original Queue a) Enqueue E b) Dequeue c) Enqueue F d) Enqueue G e) Dequeue 1) Dequeue g) Dequeue h) Dequeue i) Dequeue j) Dequeue k) Dequeue 1) Enqueue H m) Enqueue I n) Enqueue f cd 0 1 2 3 4 5 N f label cd 0 1 2 3 4 5 N a) Queue after Enqueue E