1. How can values in a pandas Series method be accessed as a Python list? using the tolist) method using the getlist() method using the list constructor any of these 2. For a DataFrame df, how can its first row be accessed? df[O] df.loc[0] df.iloc[0] any of these
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1. How can values in a pandas Series method be accessed as a Python list?
using the tolist) method
using the getlist() method
using the list constructor
any of these
2. For a DataFrame df, how can its first row be accessed?
df[O]
df.loc[0]
df.iloc[0]
any of these
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- Given the following challenges, use append(), extend(), pop(), and insert()to change the contents of the lists. The aim of this activity is to get acquainted with list methods by utilizing various Python list methods. Using the ipython3 interactive shell, change the contents of this list using the various available methods. Suppose that we have the following list: Strawberry, Blueberry, Blackberry, Cranberry Define the list berries with the following elements shown in Snippet 5.11: Strawberry, Blueberry, Blackberry, Cranberry Snippet 5.11 Change the contents of this list using the various available methods: Note: Check your output by calling the list after each method Using the built-in append() method, add the value Raspberry to the list berries. Using the built-in extend() method, extend an empty fruits list from the berries list that you created previously. Insert Mangoes into the fruits list at index 2 using the built-in method insert(). Remove the element at index 1 from…Question 30 If N represents the number of elements in the list, then the index-based add method of the LBList class is O(N). True False Question 31 A header node does not contain actual list information. True False Question 32 Any class that implements the Comparable interface must provide a compareTo method. True False Question 33 A SortedABList list can only be kept sorted based on the "natural order" of its elements. True False Question 34 O(N) is the order of growth execution time of the add operation when using the SortedArrayCollection class, assuming a collection size of N. True False Question 35 The iterator operation is required by the Iterable interface. Group of answer choices True False Question 36 O(N) is the order of growth execution time of the remove operation when using the SortedArrayCollection class, assuming a collection size of N. True False Question 37 O(N) is the order of growth execution time of the index-based add operation when…TRUE or FALSE? Answer the following question and state the reason why: The delete operation only involves the removing of the node from the list without breaking the links created by the next node. You need an array to represent each node in a linked list. STL lists are also efficient at adding elements at their back because they have a built-in pointer to the last element in the list. A circular linked list has 2 node pointers. cout<<list.back()<<endl; = The back member function returns a reference to the last element in the list. In a Dynamic Stack, the pointer top stays at the head after a push operation. During a Pop operation in Static Stack, the elements are being moved one step up. In a dynamic implementation of stack, the pointer top has an initial value of null. In a dynamic stack, the node that was popped is deleted. In a dynamic stack, the pointer top stays at the head after push operation. STL function top returns a reference to element at the top of the…
- Can Unordered List contain objects that implement Comparable? Why or why not?Which of the following statements are true? A. Appending of elements to a dynamic list takes constant time. B. Row-wise traversal of 2-dimensional arrays is commonly faster than column-wise traversal. C. Tranversing an array is faster than traversing a linked list with the same number of entries. D. Node lookup time in a balanced binary search tres is O(1).Implement a program using Doubly LinkedList. Your doubly linked list should store information of students (Reg_no., Name, CGPA, city, age). Your program should provide following functionalities: Insert at Front Insert at Rear Insert in middle Delete from front Delete from rear Delete from middle Display all the data Data Structures in C++ Needed urgent i will thumb up for you
- complete a C program to delete the first and the last nodes of Linked List by using given functions as below: void Firstnodedelete(); void Lastnodedelete(); void createnodelist (int n); void displaylist ();Need java help 1) If myList is a declared ADT list and the front of the list is on the left, show the contents of the list after applying the following pseudo code? myList.add("goat") myList.add(1, "fish") myList.add("cat") myList.remove(2) myList.add(3, "dog") myList.replace(2, "frog") a) horse frog dog cat b) fish frog dog cat c) horse fish frog dog d) frog horse dog fish 2) You can add a new entry in a list a) at the beginning b) at the end c) in between items d) all of the aboveWrite a Python code using the given function and conditions. Do not use Numpy. Use LinkedList Manipulation. Given function: def insert(self, newElement, index) Pre-condition: The list is not empty. Post-condition: This method inserts newElement at the given index of the list. If an element with the same key as newElement value already exists in the list, then it concludes the key already exists and does not insert the key. [You must also check the validity of the index].
- Question 11 If N represents the number of elements in the collection, then the contains method of the ArrayCollection class is O(1). True False Question 12 With the text's array-based list implementation, the set of stored elements is scattered about the array. True False Question 13 The add method of the LinkedCollection class places the new element at the beginning of the underlying linked list. True False Question 14 If N represents the number of elements in the list, then the index-based add method of the ABList class is O(N). True False Question 15 The attributes of a class that are used to determine equality of objects of the class are called the key attributes. True False Question 16 According to the text's specifications, a collection is a list. True False Question 17 O(1) is the order of growth execution time of the add operation when using the ArrayCollection class, assuming a collection size of N. True False Question 18 When an object of class LBList…Which of the following structures would be the most efficient to use if you wanted to establish a priority queue for quick retrieval? Choose one: a. a doubly linked list that is sorted O b. array of ordered elements a. unordered singly linked list b. unordered singly linked list c. unordered singly linked O d. an unsorted array9.7 Create a CircularList class method named reverse that allows you to reverse the order of any element within the list. This approach ought to be detrimental. 9.8 In order to remove the last element from a single linked list, we must remove each of the n references. Are all n additional preceding references required in a doubly linked list in order to delete the list's tail in constant time? (Hint: What would occur if Nodes and DoublyLinkedNodes were combined?)