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A savings account object holds a nonnegative balance, and provides deposit(k) and withdraw(k) methods, where deposit(k) adds k to the balance, and withdraw(k) subtracts k, if the balance is at least k, and otherwise blocks until the balance becomes k or greater. Implement this savings account using locks and conditions. Now suppose there are two kinds of withdrawals: ordinary and preferred. Devise an implementation that ensures that no ordinary withdrawal occurs if there is a preferred withdrawal waiting to occur. Suppose there are two threads: one account attempting an ordinary withdrawal and another account attempting a preferred withdrawal. Both are attempting to do this at the same time. The account performing the preferred withdrawal should have priority attempting to make the withdrawal. Now let us add a transfer() method that transfers a sum from one account to another: void transfer(int k, Account reserve) { lock.lock(); try { reserve.withdraw(k); deposit(k); } finally {lock.unlock();} } 4. We are given a set of 10 accounts, whose balances are unknown. At 1:00, each of n threads tries to transfer $100 from another account into its own account. At 2:00, a Boss thread deposits $1000 to each account. Is every transfer method called at 1:00 certain to return? If so, provide a test mechanism that verifies this. If not, please explain why this is not so.
Telephone system has an availability of 99.999 percent. How much downtime is that per year? Express your answer in a way that is easy for someone to understand.
Show schematically a function definition line ? And how u would call (execute) the function in a MATLAB program?
How do you think an entry level manager has to adjust to be able to grow into an upper level manager
Filters exist in natural systems, biosystems, psychsystems, mechanical, etc. Give an example of filtering in nonelectronic area
1. Draw a structured flowchart describing the steps you would take to cook popcorn in a microwave oven. Include at least one decision. 2. Create the pseudocode to go along with the flowchart created in question above.
Write a program that prompts for a pattern of 6 dice and then counts the number of throw necessary to get that pattern to appear.
1. Determine the number of conditions possible for a binary code
Suppose we want to determine if the string s=s1s2...sk is a substring much larger string a1a2...an. One approach is to compute h(s) with some hash function h.
A local department store hires you to write an automated checkout program to expedite customers in a hurry. The checkout line can only accept five items for any one purchase. Design a program that asks for the price of each item, and then displays..
Describe some of the PPP configuration options that a network administrator can utilize in this network technology.
Is data visualization a form of business intelligence? Describe why or why not? What security issues are related with data visualization?
What is the const keyword in C++? Why would you use the const keyword
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