If the DataFrame c is defined as given below, import numpy as np import pandas as pd a-np.array([1,2,3]) b-np.array([1e,20,30]) c-pd.DataFrame ({'A':a, 'B':b, 'c':100}) How many elements will the column 'C' in the DataFrame c have? O a. 3 O b. 1 O c. None of these

If the DataFrame c is defined as given below, import numpy as np import pandas as pd a-np.array([1,2,3]) b-np.array([1e,20,30]) c-pd.DataFrame ({'A':a, 'B':b, 'c':100}) How many elements will the column 'C' in the DataFrame c have? O a. 3 O b. 1 O c. None of these

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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Student* func () { unique ptr arr[] make_unique ("CSC340") }; // #1 Insert Code int main () ( // #2 Insert Code [ #1 Insert Code]: Write code to keep all the object(s) which element(s) of array arr owns alive outside of the scope of func. [#2 Insert Code]: Write code to have a weak_ptr monitor the object which survived; Then test if it has any owner; Then properly destroy it; Then test again if has any owner; Then destroy the Control Block.
solve this by c programming Write a program that deletes the first element in an array which matches a search key. Andprint the new array after deletion.
What does each line of code mean?
696832 1/overview/at tempt/ 3174138 blackboard.uob.edu.bh courses/ 24837 1/our assessment/ Write a function called "AddRows" that accepts two parameters: W1: a matrix of size 7x4 elements of type integer B1: a one dimensional array of size 4. For each column in W1, the function will calculate and store in the corresponding element of array B1, the sum of the elements located in even rows of W1. For Example if W1 3 4. 12 7. 6. 3. 4. 6. 9. 5. 5. 10 4. 5. 12 12 10 9. Then B1 35 27 5.
Code to ::::implement a SnapshotArray that supports the following interface: SnapshotArray(int length) initializes an array-like data structure with the given length. Initially, each element equals 0. void set(index, val) sets the element at the given index to be equal to val. int snap() takes a snapshot of the array and returns the snap_id: the total number of times we called snap() minus 1. int get(index, snap_id) returns the value at the given index, at the time we took the snapshot with the given snap_id Example 1: Input: ["SnapshotArray","set","snap","set","get"] [[3],[0,5],[],[0,6],[0,0]] Output: [null,null,0,null,5] Explanation: SnapshotArray snapshotArr = new SnapshotArray(3); // set the length to be 3 snapshotArr.set(0,5); // Set array[0] = 5 snapshotArr.snap(); // Take a snapshot, return snap_id = 0 snapshotArr.set(0,6); snapshotArr.get(0,0); // Get the value of array[0] with snap_id = 0, return 5...
Q1. Implement a SnapshotArray that supports the following interface: SnapshotArray(int length) initializes an array-like data structure with the given length. Initially, each element equals 0. void set(index, val) sets the element at the given index to be equal to val. int snap() takes a snapshot of the array and returns the snap_id: the total number of times we called snap() minus 1. int get(index, snap_id) returns the value at the given index, at the time we took the snapshot with the given snap_id Example 1: Input: ["SnapshotArray","set","snap","set","get"] [[3],[0,5],[],[0,6],[0,0]] Output: [null,null,0,null,5] Explanation: SnapshotArray snapshotArr = new SnapshotArray(3); // set the length to be 3 snapshotArr.set(0,5); // Set array[0] = 5 snapshotArr.snap(); // Take a snapshot, return snap_id = 0 snapshotArr.set(0,6); snapshotArr.get(0,0); // Get the value of array[0] with snap_id = 0, return 5..
programming langugae: c++ The question is attached below . kinldy refer to it
TASK 1. Re-write this code using Lambda. S TASK 2. Create an array2 that consists of 30987888 digits. Write a code using Lambda function to display only even numbers from array2. int[] array = { 2, 6, 4, 12, 7, 8, 9, 13, 2 }; var orderedFilteredArray = from element in array where element < 7 orderby element select element; PrintArray(orderedFilteredArray, "All values less than 7 and sorted:");
.The figure below shows four brokers of a Goldie Brokerage Services Ltd; and each broker has his own list of customers. All four lists of customers appear in the same array CUSTOMER, and the array LINK contains the next pointer fields of the nodes of the lists. There is also an array BROKER which contains the list of brokers, and a pointer array POINT such that POINT[K] points to the beginning of the list of customers of BROKER[K]. c BROKER POINT ||CUSTOMERLINK 1 Bamson 2 Kennedy 3 Hilda 4 Nathan 1Vito 2Alexander 12 4 3 11 2 3 Hunter 14 9 4| Katz 5 Adelaide 13 6 Evans 8 Rogers 9| Teller 15 10 10 Jones 19 11 Davidson 5 12 Grant |13 Rexy 17 14 McBride 6. 15Weston |16 17 Scott 1 18 19 William 8 |20 Prepare a list of customers that each of the four brokers (Benson, Kennedy, Hilda and Nat) have.
numpy array (([[-13,-38,22,-41,25], [-45,29,14,-34,-49], [26,21,-44,-25,0], [-30,-32,34,-39,-22], [-21,-36,0,18,37], [37,44,46,36,-37]]) Use indexing to extract the following slicers from the array [14,-34,-49], [-44,-25,0], [34,-39,-22] [[-30,-32,34,-39,-22], [-45,29,14,-34,-49], [-21,-36,0,18,37]] [25,34,46,-36]
Q 4 . Computer Science How do you use the array_pop function in an associative array in PHP? Like for example, my array is this $students = ["Anna" => "Smith", "Mark" => "Sloan", "John" => "Doe", "Meridith" => "Gray", ]; so I want to remove John Doe and print the remaining students.
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