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- TASK 7. Generic solution (Methods with Variable-Length Arguments). Review varargs, Implement the following code, test it with different input, make sure it runs without errors.Question 7: Write a method for the ArrayBoundedStack class that creates and returns a stack copy of this. (Hint: use topIndex and elements) Use following method signature: public ArrayBoundedStack<T> copy()a) Write a recursive method that calculates the following series:F(n)= (??+Σ?)??=1*(??+Σ?)?/??=1*(??+Σ?)?/??=1*(??+Σ?)?/??=1*….*2b) Write the recurrence expression T(n).
- 6.20 LAB: Fibonacci sequence Java? The Fibonacci sequence begins with 0 and then 1 follows. All subsequent values are the sum of the previous two, for example: 0, 1, 1, 2, 3, 5, 8, 13. Complete the fibonacci() method, which has an index, n, as parameter and returns the nth value in the sequence. Any negative index values should return -1.Java - The node (80, 85, 90) is split. Enter each node's keys after the split, or "none" if the node doesn't exist.Problem Description Gary being the smartest guy in the town is a friend of you. He challenges you with an interesting problem. He gives you a number A and asks you to find the number of "actual" greater pairs till A. An actual greater pair(a, b) means that it should hold following conditions • 0 <=a<b<= n • Sum of digits of a < Sum of digits of b The number A is given you in form of a string as it can be very huge! Return the number of actual greater pairs with above conditions modulo 1e9+7. Problem Constraints 1 <= A < 10100
- Please complete the task by yourself only in JAVA with explanation. Don't copy. Thank you. Using quicksort to sort an array of car objects by various criteria. Define a class Car as follows: class Car { public String make; public String model; public int mpg; // Miles per gallon } c) Implement a comparator called CompareCarsByMakeThenDescendingMPG that can be passed as an argument to the quicksort method from the lecture notes. CompareCarsByMakeThenDescendingMPG should return a value that will cause quicksort to sort an array of cars in ascending order by make and, when two cars have the same make, in descending order by mpg.Java: Please solve without using Hash set. The class will contain the following static methods: reverseS – A method that displays a string reversely on the console using the following signature: public static void reverseS(String s) printSub1 – print all substrings of a string (duplicated substrings are allowed, but loops are not allowed). The method signature: public static void printSub1(String s) printSub2 – print all substrings of a string (duplicated substrings are not allowed, but loops are allowed). The method signature: public static void printSub2(String s) Note: All methods should be RECURSIVE. Any predefined classes that are based on Set are not allowed. Allow the user to input the string! In the main method, read a string from the user and output the reversed string and substrings to the screen: Sample Run: Please input a string: abcd The reversed string: dcba The substrings of the input string: abcd abc ab a b bc b c bcd bc b c cd c d The substrings of the input string: a…I get an error at the followinf code.. it says >= is undefined for the argument type. // Return the maximum subarray among the left, right, and cross subarrays if (left.getLast() >= right.getLast() && left.getLast() >= cross.getLast()) { returnleft; } else if (right.getLast() >= left.getLast() && right.getLast() >= cross.getLast()) { returnright; } else { returncross; }
- What is stored in myList after the following C++ code executes? double myList[6];myList[0] = 2.5;for (int i = 1; i < 6; i++){myList[i] = i * myList[i – 1];if (i > 3)myList[i] = myList[i] / 2;}- Write a Polynomial class that has methods for creating a polynomial, reading and writing a polynomial, and adding a pair of polymomials - In order to add 2 polynomials, traverse both lists, If a particular exponent value is present in either one, it should also be present In the resulting polynomial unless its coefficient is zero. java submit as a text dont use others answers please attach screenshot of output Thank you!!!how would you change the test method of the palindrome class so that it considerer all character, not just letters? please identify the statements you would change, and how you would change them: public class Palindrome { public static boolean test(String candidate) // Returns true if candidate is a palindrome, false otherwise. { char ch; // current candidate character being processed int length; // length of candidate string char fromStack; // current character popped from stack char fromQueue; // current character dequeued from queue boolean stillPalindrome; // true if string might still be a palindrome StackInterface<Character> stack; // holds non blank string characters QueueInterface<Character> queue; // also holds non blank string characters // initialize variables and structures length = candidate.length(); stack = new ArrayBoundedStack<Character>(length);…