(c++) question 1: create struct to store information for 10 students (student name, mark1, mark2, mark 3) then find the average for each student. *
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- 1.Description: You are given a list of queries, each consisting of three integers: a, b, and k. Your task is to perform a series of operations on an array of size n such that each element in the array is incremented by k in a specific range defined by a and b.. Coding expansion.how do i write the following code using dict.setdefault. (assuming key is a tuple) if key not in dict:dict.update({key: [value]}) else:dict[key].append(value)MongoDB 1) The customers collection includes documents that have accounts as a field that contains an array of values. Write a statement to retrieve a cursor containing all documents where there is only one account. 2) Write a statement that returns only the email addresses of all customer documents. 3) Write a statement to retrieve a cursor containing all customer documents where the active field within the main document (i.e., do not worry about nested documents) is set to true. 4) Write a statement to retrieve a cursor containing all customer documents that do not have the active field within the main document (i.e., do not worry about nested documents). (Hint: Take a look at the Query and Projection operators in the MongoDB documentation to find an operator that helps determine whether a field exists within a document.)
- Question 8 Find the score (mean accuracy) of your knn classifier using x_test and y_test. This function should return a float between 0 and 1 [ ]: def answer_eight(): # YOUR CODE HERE raise NotImplementedError() [ ]:LO: [Analyze) Students will fix a loop that runs forever. maln.cpp New 1 #include 2 using namespace std; This program runs the countdown sequence for a rocket launch. However, it seems 3 to loop infinitely. Fix the program so it counts down and terminates properly. 4- /* 5 * Counts down to blastoff, starting from a given number. 6. */ 7- int main() { int countdown cin >> countdown; while (countdown != 0) { cout <« countdown <« -10; 10 - 11 endl; 12 countdown--; 13 } cout <« "Blast off!" << endl; return 0; 14 15 16 }Whoever must play, cannot play def subtract_square(queries): Two players play a game of "Subtract a square", starting with a positive integer. On their turn to play, each player must subtract some square number (1, 4, 9, 16, 25, 36, 49, ...) from the current number so that the result does not become negative. Under the normal play convention of these games, the player who moves to zero wins, leaving his opponent stuck with no possible moves. (In the misère version of the game that has otherwise identical rules but where you win by losing the original game, these definitions would be adjusted accordingly.) This and many similar combinatorial games can be modelled with recursive equations. This game is an example of an impartial game since the moves available to both players are exactly the same, as opposed to “partisan games” such as chess where each player can only move pieces of one colour. A game state is therefore determined by the remaining number alone, but not by which player has…
- At what point is it appropriate to build an index by hand?Solve the following questions: Q1. Using the colon operator and the transpose operator, create a column vector that has the values -1 to 1 in steps of 0.2.( Please answer this question immediately I do not have time ) Use the following table to answer the questions below: Table name: Books Column Name Role Data Type Length Constraint bookID Stores the ID of a book Number 5 Primary key bookTitle Stores the title of a book Varchar2 50 - bookISBN Stores the ISBN of a book Number 13 Cannot be null and duplicated publicationDate Store the publication date of a book Date - Cannot be null bookPrice Stores the price of a book Number 2,2 Cannot be null a. Write in SQL a command that creates the table Books according to the above description b. Write in SQL a statement that adds a new column named publisherID of type Char(10). This column should be defined as a foreign key that relates the table Books to the table Publisher c. Write in SQL a command that deletes the books that are published before 20-Aug-2010 d. Write a SQL query that displays the number of books that are published in the year 2018 e. Write in SQL a…
