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- You are to implement removeHead, and removeTail and you also have to create the following functions (for visual purposes of the detail explanation, header and trailer sentinels are described as h and t respectively): IMPORTANT NOTE: For all the methods that has the pos parameter i.e. addAt, removeAt, move, make sure to access that specified position from whichever is nearer - the head or the tail - similar to what we have done in the get method. Example DoublyLinkedList: h <-> 10 <-> 30 <-> 40 <-> 50 <-> t int add(int num) This will add the element num into the last element of the linked list and return the position of the newly-added element. In the above example, having add(60) will return 5 as it is the fifth position in the list. int remove(int num) This will remove the first instance of the element and return the position of the removed element. In the above example, having remove(40) will return 3 as 40 was the third element in the linked list…arrow_forwardThank you for the reply. This needs to be done using the Lambda method. CAn you help me with that?arrow_forwardWhile the answer works correctly, when it's checking for the "nested if" statements, it fails. Any other ways to do this? I've tried this way and the nested part passes but the returned answers are incorrectarrow_forward
- Iterating over a collection of items is the job of the for construct's looping mechanism. So long as there are things to process, it will keep running forever. So, what do you make of this?arrow_forwardThis is very helpful. Can you help with how to connect this with using Matcher libraryarrow_forwardWrite a method that takes two string parameters, and tells whether the first is a substring of the second. You can't use framework methods that do this for you, such as indexOf(). In other words, you have to write the loops yourself. But, you can use the primitive methods such as charAt(). Also analyze the program's performance and state the big-O complexity of your method. Provide a screenshot of the code working.arrow_forward
- In this part you will handle a new kind of transaction called a transfer where money is moved from one account to another account. Implement the method: • public boolean transferFromOneToAnother(String fromName, String toName, double amount) - Make a transfer from one account (fromName) to another (toName). Return true if funds are sufficient for transfer (otherwise false ). (Hint: this is similar to the two methods from Part 2, but you need to think a bit about the success/failure cases.) In the input file, transfers are indicated by listing two account handles and an amount, like lines 2, 4 and 6 of the file input6.txt where funds are transferred from Alice to Bob and vice versa: DEPOSIT Alice 300 Alice Bob 150 DEPOSIT Alice 400 Alice Bob 250 WITHDRAW Bob 200 Bob Alice 600 The result of running it should look like this: % javac-introcs TigerCoin.java % java-introcs TigerCoin Alice : 300.0 (success: true) Alice -> Bob : 150.0 (success: true) DEPOSIT -> Alice : 400.0 (success: true)…arrow_forwardCan you please show the getter and setter?arrow_forwardHelp, I am making a elevator simulation using polymorphism. I am not sure to do now. Any help would be appreciated. My code is at the bottom, that's all I could think off. There are 4 types of passengers in the system:Standard: This is the most common type of passenger and has a request percentage of 70%. Standard passengers have no special requirements.VIP: This type of passenger has a request percentage of 10%. VIP passengers are given priority and are more likely to be picked up by express elevators.Freight: This type of passenger has a request percentage of 15%. Freight passengers have large items that need to be transported and are more likely to be picked up by freight elevators.Glass: This type of passenger has a request percentage of 5%. Glass passengers have fragile items that need to be transported and are more likely to be picked up by glass elevators. public abstract class Passenger { public static int passangerCounter = 0; private String passengerID; protected…arrow_forward
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