def moves (n, fromTower, toTower, auxTower): if n == 0: return moves (n-1, fromTower, auxTower, toTower) print ("Move disk", n, "from", fromTower, "to", toTov moves (n-1, auxTower, toTower, fromTower) moves (3, 'A', 'C', 'B')
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Write a recursive function, numMoves(), that takes a number representing the number of disks in the Hanoi problem, and returns the number of moves involved. I recommend you start writing this function by modifying the hanoi.py program given. Test cases: numMoves(3) should return 7 and numMoves(4) should return 15. Do not use any global variables.
hanoi.py
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- Define the grow() method. Add the fillValue to the new cells in the underlying list Each call to grow() should double the physical size. Make sure that the array’s cells use the fillValue when the array’s size is increased. Define the shrink() method. Shrink the size by half but not below the default capacity Remove those garbage cells from the underlying list Make sure that the physical size of the array does not shrink below the user-specified capacity. To test your program run the main() method below in the arrays.py file: def main(): """Test code for modified Array class.""" a = Array(5) print("Physical size:", len(a)) print("Logical size:", a.size()) print("Items:", a) a.grow() print("Items:", a) a.grow() print("Items:", a) a.shrink() print("Items:", a) a.shrink() print("Items:", a) a.shrink() print("Items:", a) if __name__ == "__main__": main() Your program's output should look like the following: Physical size: 5 Logical size: 0 Items: [None, None, None, None, None]…Serialization Consider a company is maintaining its employees’ following data in a file: emplyeeID, FullName, DateofBirth, ContactNo, Qualification, Designation, Salary, takenLeaves, Address a. Write a java program to create/store data of 10 employees in a file. (filename = employees) b. Write a java program that takes employeeID as input, searches in file and displays the record if found. c. Create another method named as calculateBonus(String Qualification, String Designation, double Salary, int takenLeaves,), this method will return bonus. d. Write a program to read already created file and create/store data of those employees to another file, adding their bonus as well. e. Write a program that has applyLeave(int Leaves), it reads the takenLeaves from file for a particular employee and adds up Leaves that he wants to apply.Please follow the comments and please do exactly according to the comments. import java.util.Scanner; public class SortTemps{public static final int MAX_TEMPS = 1000;// As specified in the directions. public static void main(String[] args){// Temporary arrays to store all the incoming data.int[] temperature = new int[MAX_TEMPS];String[] city = new String[MAX_TEMPS]; int longestCityLength = 0; // Needed to make temperatures line upint count = 0; // Counts actual number of pairs Scanner inScanner = new Scanner(System.in); System.out.println("Enter temperature & city pairs:"); while (inScanner.hasNextInt()){temperature[count] = inScanner.nextInt();city[count] = inScanner.nextLine().trim();if (city[count].length() > longestCityLength){longestCityLength = city[count].length();}count += 1;} // RIGHT AFTER THIS COMMENT declare an instantiate cityTempPairArray// to be an array of length count, holding objects that store the// city/temperature pairs.// HINT: you will have to create…
- function myChoice(items) {if (!this.value && !this.items) {this.items = items[0];} else if (!this.value || (params.length > 0 && params[0] == "rechoose")) {let index = Math.floor(Math.random() * (this.items.length - 0)) + 0;this.value = this.items[index];return this.value;}return this.value;} var a = myChoice([1, "a", 3, false]);console.log(myChoice(3, 12));console.log(myChoice(51, -2));console.log(myChoice("happy", false));console.log(myChoice([1, 2, 3]));console.log(myChoice("rechoose"));console.log(myChoice(a, a)); these are directions and examples myChoice( items ) This function accepts a list of items as input and creates a function that returns a randomly-chosen item. After choosing a random item, that same item will be always be returned, regardless of the functions input, with one exception. If the first input is the string 'rechoose', then a new random item will be chosen and therafter returned. this is KEYYYY!! Examples var a = myChoice( [1, "a", 3, false]…def small_index(items: list[int]) -> int:"""Return the index of the first integer in items that is less than its index,or -1 if no such integer exists in items.>>> small_index([2, 5, 7, 99, 6])-1>>> small_index([-5, 8, 9, 16])0>>> small_index([5, 8, 9, 0, 1, 3])3"""Add preconditions to the methods __getitem__ and __setitem__. The precondition of each method is 0 <= index < size(). Be sure to raise an IndexError exception if the precondition is not satisfied. To test your program run the main() method in the arrays.py file. Your program's output should look like the following: Physical size: 10 Logical size: 0 Items: [None, None, None, None, None, None, None, None, None, None] Traceback (most recent call last): File ".solution/arrays.py", line 69, in <module> main() File ".solution/arrays.py", line 66, in main print(a[0]) File ".solution/arrays.py", line 45, in __getitem__ raise IndexError("Array index out of bounds") IndexError: Array index out of bounds
- /** * Returns the value associated with the given key in this symbol table. * Takes advantage of the fact that the keys appear in increasing order to terminate * early when possible. * * @param key the key * @return the value associated with the given key if the key is in the symbol table * and {@code null} if the key is not in the symbol table * @throws IllegalArgumentException if {@code key} is {@code null} */ public Value get(Key key) { // TODO // Change this code to make use of the fact the list is sorted to terminate early // when possible. if (key == null) throw new IllegalArgumentException("argument to get() is null"); return null; } Use loops for this method but do not use the keys() method. Note: You are modifying the implementation of the methods, but not their interface or contract./** * Returns the value associated with the given key in this symbol table. * Takes advantage of the fact that the keys appear in increasing order to terminate * early when possible. * * @param key the key * @return the value associated with the given key if the key is in the symbol table * and {@code null} if the key is not in the symbol table * @throws IllegalArgumentException if {@code key} is {@code null} */ public Value get(Key key) { // TODO // Change this code to make use of the fact the list is sorted to terminate early // when possible. if (key == null) throw new IllegalArgumentException("argument to get() is null"); return null; } Use loops and nodes for this method but do not use the keys() method. Note: You are modifying the implementation of the methods, but not their interface or contract./** * Returns the value associated with the given key in this symbol table. * Takes advantage of the fact that the keys appear in increasing order to terminate * early when possible. * * @param key the key * @return the value associated with the given key if the key is in the symbol table * and {@code null} if the key is not in the symbol table * @throws IllegalArgumentException if {@code key} is {@code null} */ public Value get(Key key) { // TODO // Change this code to make use of the fact the list is sorted to terminate early // when possible. Also, solve this using recursion. To do this, you will need to // add a recursive helper function that takes the front of a list (Node) as an argument // and returns the correct value. if (key == null) throw new IllegalArgumentException("argument to get() is null"); for (Node x = first; x != null; x = x.next) { if (key.equals(x.key))…
- /** * Returns the value associated with the given key in this symbol table. * Takes advantage of the fact that the keys appear in increasing order to terminate * early when possible. * * @param key the key * @return the value associated with the given key if the key is in the symbol table * and {@code null} if the key is not in the symbol table * @throws IllegalArgumentException if {@code key} is {@code null} */ public Value get(Key key) { // TODO // Change this code to make use of the fact the list is sorted to terminate early // when possible. Also, solve this using recursion. To do this, you will need to // add a recursive helper function that takes the front of a list (Node) as an argument // and returns the correct value. if (key == null) throw new IllegalArgumentException("argument to get() is null"); for (Node x = first; x != null; x = x.next) { if (key.equals(x.key))…/** * Returns the value associated with the given key in this symbol table. * Takes advantage of the fact that the keys appear in increasing order to terminate * early when possible. * * @param key the key * @return the value associated with the given key if the key is in the symbol table * and {@code null} if the key is not in the symbol table * @throws IllegalArgumentException if {@code key} is {@code null} */ public Value get(Key key) { // TODO // Change this code to make use of the fact the list is sorted to terminate early // when possible. if (key == null) throw new IllegalArgumentException("argument to get() is null"); return null; }/** * Returns the value associated with the given key in this symbol table. * Takes advantage of the fact that the keys appear in increasing order to terminate * early when possible. * * @param key the key * @return the value associated with the given key if the key is in the symbol table * and {@code null} if the key is not in the symbol table * @throws IllegalArgumentException if {@code key} is {@code null} */ public Value get(Key key) { // TODO // Change this code to make use of the fact the list is sorted to terminate early // when possible. Also, solve this using recursion. To do this, you will need to // add a recursive helper function that takes the front of a list (Node) as an argument // and returns the correct value. if (key == null) throw new IllegalArgumentException("argument to get() is null"); for (Node x = first; x != null; x = x.next) { if (key.equals(x.key))…
