def delete_task (..., ...): param: task_collection (list) - holds all tasks; an integer ID indexes each task (stored as a dictionary) param:... (str) - a string that is supposed to represent an integer ID that indexes the task in the list returns: 0 - if the collection is empty. -1 - if the provided parameter is not a string or if it is not a string that contains a valid integer >=0 representing the task's position on the list. Otherwise, returns the item (dict) that was removed from the provided collection. 11 11 11

def delete_task (..., ...): param: task_collection (list) - holds all tasks; an integer ID indexes each task (stored as a dictionary) param:... (str) - a string that is supposed to represent an integer ID that indexes the task in the list returns: 0 - if the collection is empty. -1 - if the provided parameter is not a string or if it is not a string that contains a valid integer >=0 representing the task's position on the list. Otherwise, returns the item (dict) that was removed from the provided collection. 11 11 11

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

See similar textbooks

Similar questions

def get_task(task_collection, ...): """ param: task_collection (list) - holds all tasks; maps an integer ID/index to each task object (a dictionary) param: ... (str) - a string that is supposed to represent an integer ID that corresponds to a valid index in the collection returns: 0 - if the collection is empty. -1 - if the provided parameter is not a string or if it is not a valid integer Otherwise, convert the provided string to an integer; returns None if the ID is not a valid index in the list or returns the existing item (dict) that was requested. """
def delete_item(...): """ param: info_list - a list from which to remove an item param: idx (str) - a string that is expected to contain an integer index of an item in the in_list param: start_idx (int) - an expected starting value for idx (default is 0); gets subtracted from idx for 0-based indexing The function first checks if info_list is empty. The function then calls is_valid_index() to verify that the provided index idx is a valid positive index that can access an element from info_list. On success, the function saves the item from info_list and returns it after it is deleted from info_list. returns: If info_list is empty, return 0. If is_valid_index() returns False, return -1. Otherwise, on success, the function returns the element that was just removed from info_list. Helper functions: - is_valid_index() """
find_last(my_list, x): Takes two inputs: the first being a list and the second being any type. Returns the index of the last element of the list which is equal to the second input; if it cannot be found, returns None instead. >>> find_last(['a', 'b', 'b', 'a'], 'b') 2 >>> ind = find_last(['a', 'b', 'b', 'a'], 'c') >>> print(ind) None • find_first(my_list, x): Takes two inputs: the first being a list and the second being any type. Returns the index of the first element of the list which is equal to the second input; if it cannot be found, returns None instead. >>> find_first(['a', 'b', 'b', 'a'], 'b') 1 >>> ind = find_first(['a', 'b', 'b', 'a'], 'c') >>> print(ind) None In python
find_last(my_list, x): Takes two inputs: the first being a list and the second being any type. Returns the index of the last element of the list which is equal to the second input; if it cannot be found, returns None instead. >>> find_last(['a', 'b', 'b', 'a'], 'b') 2 >>> ind = find_last(['a', 'b', 'b', 'a'], 'c') >>> print(ind) None
class Node: def __init__(self, e, n): self.element = e self.next = n class LinkedList: def __init__(self, a): # Design the constructor based on data type of a. If 'a' is built in python list then # Creates a linked list using the values from the given array. head will refer # to the Node that contains the element from a[0] # Else Sets the value of head. head will refer # to the given LinkedList # Hint: Use the type() function to determine the data type of a self.head = None # To Do # Count the number of nodes in the list def countNode(self): # To Do # Print elements in the list def printList(self): # To Do # returns the reference of the Node at the given index. For invalid index return None. def nodeAt(self, idx): # To Do
struct nodeType { int infoData; nodeType * next; }; nodeType *first; … and containing the values(see image) Using a loop to reach the end of the list, write a code segment that deletes all the nodes in the list. Ensure the code performs all memory ‘cleanup’ functions.
A c++ code that performs a search for a specific employee and returns the employee ID if found and 0 if not: int findEmployeeById(Employee list[], int size, int myId)
ASSUMING C LANGUAGE True or False: You can have the data portion of a Linked List be a Struct containing a Linked List itself
Nearest smaller element def nearest_smaller(items): Given a list of integer items, create and return a new list of the same length but where each element has been replaced with the nearest element in the original list whose value is smaller. If no smaller elements exist because that element is the minimum of the original list, the element in the result list should remain as that same minimum element.If there exist smaller elements equidistant in both directions, you must resolve this by using the smaller of these two elements. This again makes the expected results unique for every possible value of items, which is necessary for the automated testing framework to work at all. Being permissive in what you accept while being restrictive in what you emit is a pretty good principle to follow in all walks of life, not just in programming. items Expected result [42, 42, 42] [42, 42, 42] [42, 1, 17] [1, 1, 1] [42, 17, 1] [17, 1, 1] [6, 9, 3, 2] [3, 3, 2, 2] [5, 2, 10, 1, 13, 15,…
is a data structure that makes it easy to rearrange data without having to move data in memory:a. arrayb. stack arrayc. linked listd. queue array
A code segment is intended to transform the list utensils so that the last element of the list is moved to the beginning of the list. For example, if utensils initially contains ["fork", "spoon", "tongs", "spatula", "whisk"], it should contain ["whisk", "fork", "spoon", "tongs", "spatula"] after executing the code segment. Which of the following code segments transforms the list as intended? len + LENGTH (utensils) temp + utensils[len) REMOVE (utensils, len) APPEND (utensils, temp) A len + LENGTH(utensils) REMOVE (utensils, len) B temp + utensils[len) APPEND (utensils, temp) len + LENGTH (utensils) temp + utensils[len] REMOVE (utensils, len) INSERT (utensils, 1, temp) len + LENGTH(utensils) REMOVE (utensils, len) D temp + utensils[len] INSERT(utensils, 1, temp)
2. ID: A Name: 2. A list of numbers is considered increasing if each value after the first is greater than or equal to the preceding value. The following procedure is intended to return true if numberList is increasing and return false otherwise. Assume that numberList contains at least two elements. Line 1: PROCEDURE isIncreasing (numberList) Line 2: { Line 3: count 2 Line 4: REPEAT UNTIL(count > LENGTH(numberList)) Line 5: Line 6: IF(numberList[count] =. YA198IC