Exercise 1 Write a function called nested_sum that takes a list of lists of integers and adds up the elements from all of the nested lists. For example: >>> t = [[1, 2], [3], [4, 5, 6]] >>> nested_sum(t) 21

Exercise 1 Write a function called nested_sum that takes a list of lists of integers and adds up the elements from all of the nested lists. For example: >>> t = [[1, 2], [3], [4, 5, 6]] >>> nested_sum(t) 21

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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Write a user defined function named as “length_list” function that finds the length of a list of list_node_t nodes. This code should fit with the following code.Partial Code: #include <stdio.h> #include <stdlib.h> /* gives access to malloc */ #define SENT -1 typedef struct list_node_s { int digit; struct list_node_s *restp; } list_node_t; list_node_t *get_list(void); int main(void) { list_node_t *x;int y; x=get_list(); printf("%d\n",x->digit); printf("%d\n",x->restp->digit); printf("%d\n",x->restp->restp->digit); // your length_list function should be called from here printf("Length is: %d",y); } /* * Forms a linked list of an input list of integers * terminated by SENT */ list_node_t * get_list(void) { int data; list_node_t *ansp; [20]scanf("%d", &data); if (data == SENT) { ansp = NULL; } else { ansp = (list_node_t *)malloc(sizeof (list_node_t)); ansp->digit = data; ansp->restp = get_list(); } return (ansp);
program7.pyThis assignment requires the main function and a custom value-returning function. The value-returning function takes a list of random integers as its only argument and returns a smaller list of only the elements that end with 7. This value-returning function must use a list comprehension to create this smaller list.In the main function, code these steps in this sequence: Set random seed to 42 import randomrandom.seed(42) create an empty list that will the hold random integers. use a loop to add 50 random integers to the list. All integers should be between 200 and 250, inclusive. Duplicates are okay. sort the list in ascending order and then use another loop to display all 50 sorted integers on one line separated by spaces. print a slice showing list elements indexed 5 through 10, inclusive. print a second slice showing the final 5 elements in the sorted list. execute the custom function with the entire original list as its sole argument. report the number of elements in…
Write a function called remove_odd that takes a list of numbers that have both even and odd numbers mixed.# Function should remove all the odd numbers and return a compact list which only contains the even numbers. Example1: Function Call:remove_odd ([21, 33, 44, 66, 11, 1, 88, 45, 10, 9])Output:[44, 66, 88, 10]
JS Write a function named list_concat that has a single parameter. This parameter will be a list/array. The parameter's entries will be strings. Your function needs to return a string. The returned string's value should be the concatention of all of the entries in the parameter with a space after each entry. Sample test cases: list_concat(["single"]) evaluates to "single list_concat(["limit", "break", "ready"]) evaluates to "limit break ready
Recamán's sequence def recaman(n): Compute and return the first n terms of the Recamán's sequence, starting from the term a1 = 1.Note how the definition for the current next element depends on whether a particular number is already part of the previously generated part of the sequence. To let your function execute in a speedy fashion even when generating a sequence that contains millions of elements, you should use a set to keep track of which values are already part of the previously generated sequence. This way you can generate each element in constant time, instead of having to iterate through the entire previously generated list. The better technique that saves time by using more memory can create this list arbitrarily far in linear time, and should therefore be fast even for millions of elements, at least until it runs out of memory. n Expected result 10 [1, 3, 6, 2, 7, 13, 20, 12, 21, 11] 1000000 (a list of million elements whose last five elements are [2057162,1057165,…
18) Write a function that takes in 2 lists and checks whether they have the same elements in the same order. If the elements are all the same, the function should return the string “same”. If any of the elements are different, the function should return the string “different”. The definition of the function should be: Def equals(a, b):
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]
Question 15 kk .Full explain this question and text typing work only We should answer our question within 2 hours takes more time then we will reduce Rating Dont ignore this line
Exercise 3 Use the function design recipe to develop a function named unique_list. The function takes a list of strings, which may be empty. The function returns a new list that includes the first occurrence of each value in a list and omits later repeats. The returned list should include the first occurrences of values in a list in their original order. For example, if a list contains the following animals ['cat', 'dog', 'cat', 'bug', 'dog', 'ant', 'dog', 'bug'], the unique_list function returns a unique list: ['cat', 'dog', 'bug', 'ant'].
HAPTER 5: Lists and Dictiona st membership > 51621 O WorkArea Instructions eadline: 03/ 11:59pm EDT Given that k contains an integer and that play_list has been defined to be a list, write a expression that evaluates to True if the value assigned to k is an element of play_list. Additional Notes: play_list and k should not be modified
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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