T/F: All recursive algorithms are efficient due to its recursive property.

Data structure & Alogrithums java program A system of caves is a group of connected undergrounds tunnels. Design an ADT for a cave and cave system. An archaelogist should be able to add a newly discovered cave to a cave system. He/she can enter this system through only one cave and exit the system only through a different cave. Duplicate caves - based on GPS coordinates - are not permitted. Archaelogoist should also be able to list the caves in a given cave system.

Recursive Power MethodWrite a method called powCal that uses recursion to raise a number to a power. The method should accept two arguments: The first argument is the exponent and the second argument is the number to be raised (example" powCal(10,2) means 210). Assume that the exponent is a nonnegative integer. Demonstrate the method in a program called Recursive (This means that you need to write a program that has at least two methods: main and powCal. The powCal method is where you implement the requirements above and the main method is where you make a method call to demonstrate how your powCal method work).

def is_balanced(root): return __is_balanced_recursive(root) def __is_balanced_recursive(root): """ O(N) solution """ return -1 != __get_depth(root) def __get_depth(root): """ return 0 if unbalanced else depth + 1 """ if root is None: return 0 left = __get_depth(root.left) right = __get_depth(root.right) if abs(left-right) > 1 or -1 in [left, right]: return -1 return 1 + max(left, right) # def is_balanced(root):# """# O(N^2) solution# """# left = max_height(root.left)# right = max_height(root.right)# return abs(left-right) <= 1 and is_balanced(root.left) and# is_balanced(root.right) # def max_height(root):# if root is None:.

Charge Account Validation Using Java programming Create a class with a method that accepts a charge account number as its argument. The method should determine whether the number is valid by comparing it to the following list of valid charge account numbers:5658845 4520125 7895122 8777541 8451277 13028508080152 4562555 5552012 5050552 7825877 12502551005231 6545231 3852085 7576651 7881200 4581002These numbers should be stored in an array. Use a sequential search to locate the number passed as an argument. If the number is in the array, the method should return true, indicating the number is valid. If the number is not in the array, the method should return false, indicating the number is invalid.Write a program that tests the class by asking the user to enter a charge account number. The program should display a message indicating whether the number is valid or invalid.

8. Know how to do these, to trace functions like these and to debug functions like these: // recursive power , compute xn int exp(int x, int n){ if(n== return return *exp( ); } void main(){ int a,b; cin>>a>>b; cout>a; rev_print(a); }

C++ The binary search algorithm given in this chapter is nonrecursive. Write and implement a recursive version of the binary search algorithm. The program should prompt Y / y to continue searching and N / n to discontinue. If an item is found in the list display the following message: x found at position y else: x is not in the list Use the following list of integers when testing your program: 2, 6, 8, 13, 25, 33, 39, 42, 53, 58, 61, 68, 71, 84, 97

python def factorial(n):pass # replace this line with your lines of recursive codedef sum_recursively(n):pass # replace this line with your lines of recursive codedef sumlist_recursively(l):pass # replace this line with your lines of recursive codedef reverse_recursively(l):pass # replace this line with your lines of recursive code#EXTRA CREDITdef multiply_recursively(n, m):pass # replace this line with your lines of recursive code

Enhanced selection sort algorithm SelectionSortDemo.java package chapter7; /** This program demonstrates the selectionSort method in the ArrayTools class. */ public class SelectionSortDemo { public static void main(String[] arg) { int[] values = {5, 7, 2, 8, 9, 1}; // Display the unsorted array. System.out.println("The unsorted values are:"); for (int i = 0; i < values.length; i++) System.out.print(values[i] + " "); System.out.println(); // Sort the array. selectionSort(values); // Display the sorted array. System.out.println("The sorted values are:"); for (int i = 0; i < values.length; i++) System.out.print(values[i] + " "); System.out.println(); } /** The selectionSort method performs a selection sort on an int array. The array is sorted in ascending order. @param array The array to sort. */ public static void selectionSort(int[] array) { int startScan, index, minIndex, minValue; for (startScan = 0; startScan < (array.length-1); startScan++) { minIndex = startScan; minValue...

Python question Analysis: Invariants (Q16-17) For each of the following functions, identify the loop invariant, exit condition and post condition. Question 16 (Invariant 1) This function returns the list of integers that are multiples of both 3 and 7 that occurs within a given list. Identify the loop exit condition, the loop post-condition, and the loop invariant at the end of the loop, which shows the algorithm’s correctness. def multiples_count(lst): """ Input: a list of integers, lst Output: the list of integers in lst that are multiples of both 3 and 7 """ res = [] for i in range(len(lst)): if lst[i]%3 == 0 and lst[i]%7 == 0: res.append(lst[i]) # Identify the loop invariant here return res Question 17 (Invariant 2) This function checks if a given list (of comparable elements) is sorted in ascending order. Identify the loop exit condition, the loop post-condition, and the loop invariant at the end of each iteration of the loop, which...

Submerging is the phenomenon wherein the pointer vanishes when you move it too quickly.

When you move the pointer too quickly, a phenomena known as submarineing happens when the cursor vanishes.

Tic tac game in JAVA