python problem Problem 13Write a function that takes a list and computes the alternating sum of all its elements. An alternating sum alternates betweenadding and subtracting elements. The example returns -2 because 1 – 4+9 – 16+9 – 7+4 –- 9+ 11. Your function shouldreturn the alternating sum of a list.Example IO:alt-sum ([1,4 ,9 , 16 ,9 , 7 ,4 ,9 ,11]) #returns -2

Problem 13 Vrite a function that takes a list and computes the alternating sum of all its elements. An alternating sum alternates between dding and subtracting elements. The example returns -2 because 1 – 4+9 – 16 +9 – 7 +4 – 9+11. Your function should eturn the alternating sum of a list. xample IO: lt-sum ([1.4.9.16.9.7.4.9.11]) #returns

Problem 13 Vrite a function that takes a list and computes the alternating sum of all its elements. An alternating sum alternates between dding and subtracting elements. The example returns -2 because 1 – 4+9 – 16 +9 – 7 +4 – 9+11. Your function should eturn the alternating sum of a list. xample IO: lt-sum ([1.4.9.16.9.7.4.9.11]) #returns

C++ Programming: From Problem Analysis to Program Design

8th Edition

ISBN:9781337102087

Author:D. S. Malik

Publisher:D. S. Malik

Chapter17: Linked Lists

Section: Chapter Questions

Problem 16PE

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The function list_combination takes two lists as arguments, list_one and list_two. Return from the function the combination of both lists - that is, a single list such that it alternately takes elements from both lists starting from list_one. You can assume that both list_one and list_two will be of equal lengths. As an example if list_one = [1,3,5] and if list_two = [2,4,6]. The function must return [1,2,3,4,5,6].
emacs/lisp function Write a function that takes one parameter that is a list of numbers and returns true (t) if all the elements of the list are multiples of the first one and nil otherwise. This said, a list generated by the function make-multiples could be passed to this new function and the result should be true. On the other hand, show an example of a list that could not have been generated by the first function for which the result is still true.
Exercise 2 Write a function called cumsum that takes a list of numbers and returns the cumulative sum; that is, a new list where the ith element is the sum of the first i+1 elements from the original list. For example: >>> t = [1, 2, 3] >>> cumsum(t) [1, 3, 6]
2. Write a function called chop that takes a list, modifies it by removing the first and last elements, and returns None. For example: >>> t = [1, 2, 3, 4] >>> chop (t) >>> t [2, 3]
1. Write a function called chop that takes a list, modifies it by removing the first and last elements, and returns None. For example: >>> t = [1, 2, 3, 4, 5, 6] >>> chop(t) >>> t [2, 3, 4, 5] 2. Write a function called list_median that takes a list and returns a new list. If the list has even numbers of elements, the new list will have two elements. If the list has odd numbers of elements, the new list will include only one element. For example: >>> t1 = [5, 1, 2, 3, 4] >>> list_median(t1) [3] >>> t2 = [8, 3, 10, 6] >>> list_median(t2) [6, 8] 3. Write a function called has_duplicates that takes a list and returns True if there is any element that appears more than once. It should not modify the original list. For example: >>> t1 = [5, 1, 2, 3, 4] >>> has_duplicates(t1) False >>> t2 = [5, 1, 2, 3, 2, 8, 10] >>> has_duplicates(t2) True
Write a function reverse_iter_for that takes a list and returns a new list that is the reverse of the original using a for loop. You should not need any indexing notation. def reverse_iter_for(lst): """Returns the reverse of the given list. >>> reverse_iter_for([1, 2, 3, 4]) [4, 3, 2, 1] TELEEL "*** YOUR CODE HERE ***" Complete the function reverse_iter_while that behaves identically to reverse_iter_for but is implemented as using a while loop. You may use indexing or slicing notation. Do not use 1st [::-1] ! def reverse_iter_while(lst): """Returns the reverse of the given list. >>> reverse_iter_while([1, 2, 3, 4]) [4, 3, 2, 1] rev_lst, i = [], 0 while i < len(lst): "*** YOUR CODE HERE ***"
16-Write a function called find_integer_with_most_divisors that receives a list of integers and returns the integer from the list with the most divisors .In the event of a tie, the first case with the most divisors returns .For example: If the list looks like this: [8, 12, 18, 6] In this list, the number 8 has four divisors, which are ;[1,2,4,8] :The number 12 has six divisors, which are ;[1,2,3,4,6,12] :The number 18 has six divisors, which are ;[1,2,3,6,9,18] :And the number 6 has four divisors, which are : [1,2,3,6]Note that both items 12 and 18 have the maximum number of divisors and are equal in number of divisors (both have 6 divisors) .Your function must return the first item with the maximum number of divisors ;Therefore it must return the following value: 12
Exercise 5 Write a function called is_sorted that takes a list as a parameter and returns True if the list is sorted in ascending order and False otherwise. For example: >>> is_sorted([1, 2, 2]) True >>> is_sorted(['b', 'a']) False
The mapped list pattern Our second pattern is the mapped list pattern, described in video 4 3 mapped list pattern. Often we need to write a function that takes a list as a parameter and returns a new list in which each item in the original list is "mapped" to a new item in the result list. For example, the following function takes a list of numbers as a parameter and returns a list of all the numbers squared, e.g. squares ( [1, 3, 7]) returns [1, 9, 49]. def squares (nums): "Returns the squares of the given numbers""" result = [] for num in nums: result.append (num * num) return result Although this is just a special case of the accumulator pattern, it is so common that we give it its own name: the mapped list pattern. Consider the following function: def squares(nums): ""Returns the squares of the given numbers""" result = [] for num in nums: result.append (num * num) return result If the main program calls print(squares ( [5, -3, 2, 7]) what is the state table for the function…
Exercise 4 Write a function called chop that takes a list, modifies it by removing the first and last elements, and returns None. For example: >>> t = [1, 2, 3, 4] >>> chop(t) >>> t [2, 3]
Write a function called chop_list that takes a list, modifies it by removing the first and last elements, and return a list. For example: list1=[1,2,3,4,5] -> chop_list( list1) =[2,3,4] list2=["a", "b", "e", "f") -> chop_list( list2) =["b","e"]
Code in python Given a list, L, the function front_two creates a new list of length 2 out of the first two items in L as follows: In the new list, the second item becomes the first item, and the first item becomes the second. If L contains only one item, the first item in the new list should be the value None. If L is empty, both items in the new list should be value None. The function returns the new list. For example: Test Result L = ['a', 'b', 'c', 'd'] print(front_two(L)) ['b', 'a'] L = [] print(front_two(L)) [None, None] L = [5, 2] print(front_two(L)) [2, 5] L = [7] print(front_two(L)) [None, 7]