Question: 3.4 (10 points) Consider a simple bidding system which has the following functionalities Display the latest bid to online bidders Announce the latest bid to

3.4 (10 points) Consider a simple bidding system which has the

3.4 (10 points) Consider a simple bidding system which has the following functionalities Display the latest bid to online bidders Announce the latest bid to call-in bidders (who are on the phone) Save all bids to a database. Use the observer pattern to design this system, and present your design using a class diagram. 3.5 (10 points) Design a program that can sort an array using different sorting algorithms, such as quick sort, merge sort, bubble sort, insertion sort. Present your design using a class diagram. 3.4 (10 points) Consider a simple bidding system which has the following functionalities Display the latest bid to online bidders Announce the latest bid to call-in bidders (who are on the phone) Save all bids to a database. Use the observer pattern to design this system, and present your design using a class diagram. 3.5 (10 points) Design a program that can sort an array using different sorting algorithms, such as quick sort, merge sort, bubble sort, insertion sort. Present your design using a class diagram

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