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saul85 [17]
1 year ago
13

A police department wants to maintain a database of up to 1800 license-plate numbers of people who receive frequent tickets so t

hat it can be determined very quickly whether or not a given license plate is in the database. Speed of response is very important; efficient use of memory is also important, but not as important as speed of response. Which of the following data structures would be most appropriate for this task?
a. a sorted linked list
b. a sorted array with 1,800 entries
c. a hash table using open addressing with 1,800 entries
d. a hash table using open addressing with 3,600 entries
e. a hash table using open addressing with 10,000 entries
Computers and Technology
1 answer:
maksim [4K]1 year ago
6 0

Answer:

c.

Explanation:

I believe that in this scenario, the best option for this data would be a hash table using open addressing with 1,800 entries. Hash tables consume more memory than lists but it makes up for it with much faster response time speeds. This is because hash tables work on a key:value system therefore, the license plate can easily be grabbed from the database extremely quickly by just plugging in the plate number. Doing so will retrieve all of the saved information from that license plate. That is why hash tables have a constant time complexity of O(1)

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Design a GUI program to find the weighted average of four test scores. The four test scores and their respective weights are giv
Alexus [3.1K]

<u>Answer:</u>

I am writing <em>partial code in</em> <em>c++ to calculate weighted average</em>. The weighted average should be calculated based on multiplying the test score and its <em>respective weight and finally add all the test score.</em>

<u>Explanation:</u>

<em>int arrtestscore[100];</em>

<em>int arrweight[100];</em>

<em>int n;</em>

<em>double weightedavg;</em>

<em>cout<<”Enter the number of test score for which weighted average needs to be calculated”;</em>

<em>cin>>n;</em>

<em>for(int x = 0; x <n;x++)</em>

<em>{</em>

<em> cout<<”Enter test score :” + (x+1) ;</em>

<em> cin>>arrtestscore[x];</em>

<em> count<<”Enter the respective weight:”;</em>

<em> cin>>arrweight[x];</em>

<em>}</em>

<em>for (int i=0; i<n;i++)</em>

<em>{</em>

<em> weightedavg = weightedavg + (arrtestscore[i] * arrweight[i])</em>

<em>}</em>

<em>cout<<”weighted average = “ <<weightedavg; </em>

3 0
2 years ago
An online retailer is looking to implement an enterprise platform. Which component of the enterprise platform will help the comp
adelina 88 [10]

Answer: Data and Insights

Explanation:

Data and Insights in an enterprise platform is very important as it helps users better understand their customers so that they may be able to offer them the best services.

Data allows the platform to capture the data of the customer and insights then curates and consumes the data for analysis. The result of this analysis will enable the company to better understand the customer so that they might be able to offer preferable products.

3 0
1 year ago
3.14 LAB: Simple statistics for Python
Ad libitum [116K]

Answer:

Following are the correct python code to this question:

n1 = float(input('Input first number: '))#input first number  

n2 = float(input('Input second number: '))#input second number  

n3 = float(input('Input third number: '))#input third number  

n4 = float(input('Input fourth number: '))#input fourth number  

average = (n1+n2+n3+n4)/4 #calculate input number average

product = n1*n2*n3*n4 # calculate input number product

print('product: {:.0f}  average: {:.0f}'.format(round(product),round(average))) #print product and average using round function

print('product: {:.3f}  average: {:.3f}'.format(product,average)) #print product and average value

Output:

Please find the attachment.

Explanation:

The description of the above python code can be defined as follows:

  • In the above python program four variable "n1, n2, n3, and n4" is defined, in which we take input from the user end, and in these user inputs we use the float method, that converts all the input value in to float value.
  • In the next step, two variable average and product are defined, that calculate all input numbers product, average, and hold value in its variable.
  • In the last line, the print method is used, which prints its variable value by using a round and format method.

8 0
2 years ago
3.34 LAB: Mad Lib - loops in C++
Ganezh [65]

Answer:

A Program was written to carry out some set activities. below is the code program in C++ in the explanation section

Explanation:

Solution

CODE

#include <iostream>

using namespace std;

int main() {

string name; // variables

int number;

cin >> name >> number; // taking user input

while(number != 0)

{

// printing output

cout << "Eating " << number << " " << name << " a day keeps the doctor away." << endl;

// taking user input again

cin >> name >> number;

}

}

Note: Kindly find an attached copy of the compiled program output to this question.

7 0
2 years ago
Java uses interfaces to provide the benefits of multiple inheritance. A superclass object is a subclass object. A subclass is of
WITCHER [35]

COMPLETE QUESTION

Which of the following is false?

a. A subclass is often larger than its super class.

b. A super class is object is a subclass object.

c. The class following the extends keyword in a class declaration is that direct super class of the class being declared.

d. Java uses interfaces to provide the benefits of multiple inheritance

Answer:

B) A super class is object is a subclass object.

Explanation:

In object oriented programming, the concept of inheritance is greatly utilized, this refers to deriving a class from another class. The derived class is the sub-class and it is derived from its super class, as a matter of fact in Java programming language, all classes are derived from some other class. Objects are made from classes with their state (fields) and behavior (methods) since objects are made from classes, the objects of the super class will not be the same as that of the subclass.

4 0
2 years ago
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