Write a function that takes in a list and returns the first nonzero entry.def nonzero(lst):…………….Returns the first nonzero element of a list>>> nonzero ([1, 2, 3])1>>> nonzero ( [0, 1, 2])1>>> nonzero ( [0, 0, 0, 0, 0, 0, 5, 0, 61])5"*** YOUR CODE HERE ***"

To return the first non-zero entry.

Write a function that takes in a list and returns the first nonzero entry. def nonzero (1st): """ Returns the first nonzero element of a list >>> nonzero ([1, 2, 3]) 1 >>> nonzero ( [0, 1, 2]) 1 nonzero ( [0, 0, 0, 0, 0, 0, 5, 0, 61) >>> 5 HIB "**** YOUR CODE HERE ***"

Write a function that takes in a list and returns the first nonzero entry. def nonzero (1st): """ Returns the first nonzero element of a list >>> nonzero ([1, 2, 3]) 1 >>> nonzero ( [0, 1, 2]) 1 nonzero ( [0, 0, 0, 0, 0, 0, 5, 0, 61) >>> 5 HIB "** YOUR CODE HERE *"

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Create a function that takes two numbers as arguments (num, length) and returns a list of multiples of num until the list length reaches length. Examples list_of_multiples(7, 5) → [7, 14, 21, 28, 35] list_of_multiples(12, 10) → [12, 24, 36, 48, 60, 72, 84, 96, 108, 120] list_of_multiples(17, 6) [17, 34, 51, 68, 85, 102]
Exercise 3 Write a function called middle that takes a list and returns a new list that contains all but the first and last elements. For example: >>> t = [1, 2, 3, 4] >>> middle(t) [2, 3]
The function should be written in python language. Write a function called "zero_triples" to return all triples in a list of integers that sum to zero. You can assume the list won't contain any duplicates, and a triple should not use the same number more than once. [In]: zero_triples([1, 2, 4]) [Out]: [] [In]: zero_triples([-3, 1, 4, 2]) [Out]: [[1, 2, -3]] [In]: zero_triples([-9, 1, -3, 2, 4, 5, -4, -1]) [Out]: [[-9, 4, 5], [1, -3, 2], [-3, 4, -1], [5, -4, -1]]
Write a function called myunion that will take two lists x and y, and return a list that has the elements of x, followed by the elements of y that are not found in x. For example: (myunion ’(1 3 5 7 9) ’(1 2 3 4 5 6 7)) should return (1 3 5 7 9 2 4 6).
Write a function val nextpascalrow : int list -> int list = <fun> that given a list of integers that correspond to a row of the pascal triangle, it calculates the next row of the pascal triangle. # nextpascalrow [1; 6; 15; 20; 15; 6; 1];; - : int list = [1; 7; 21; 35; 35; 21; 7; 1]
3. Write the remove_evens() function that receives a list of integers as a parameter and returns a new list of integers containing only the odd numbers from the original list. Ex1) If n = [1, 2, 3, 4, 5, 6], remove_evens(n) returns [1, 3, 5]. Ex2) If n = [2, 4, 8], remov move_evens(n) returns [].
Write the following function that partitions the list using the first element, called a pivot:def partition(lst): After the partition, the elements in the list are rearranged so that all the elements before the pivot are less than or equal to the pivot and the element after the pivot are greater than the pivot. The function also returns the index where the pivot is located in the new list. For example, suppose the list is [5, 2, 9, 3, 6, 8]. After the partition, the list becomes [3, 2, 5, 9, 6, 8]. Implement the function in a way that takes len(lst) comparisons. Write a test program that prompts the user to enter a list and displays the list after the partition.
python wirte a function max_indexes(xs) that inserts a list xs with numbers and returns a list of indexpositions where the list has local maximum values. A local maximum value is a number in the list that has a smaller number before and after. for example in this list has a local maximum at position 2 and 7: [3, 4, 5, 2, 1, 0, 4, 6, 4, 2, 1] Here the function should return [2, 7]
Complete the reverse_list() function that returns a new string list containing all contents in the parameter but in reverse order. Ex: If the input list is: ['a', 'b', 'c'] then the returned list will be: ['c', 'b', 'a'] Note: Use a for loop. DO NOT use reverse() or reversed(). This is my code so far: def reverse_list(letters): for x in (letters): letters.sort(reverse=True) return lettersif __name__ == '__main__': ch = ['a', 'b', 'c'] print(reverse_list(ch)) # Should print ['c', 'b', 'a'] When submitting I get 4/10 and it says: Test input list ['a', 'b', 'c'] returns ['c', 'b', 'a'] Your output reverse_list() function reversed array incorrectly: ['c', 'b', 'a'] reverse_list() function should have returned: ['a', 'b', 'c'] Test input list ['a', 'b', 'c', 'd'], first element of returned list is ['d'] Your output First character of returned array should be a instead of d Test empty input array TypeError: object of type 'NoneType' has no len()
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