### City Comparison ProgramThis program compares cities visited by two people and organizes them into three sets:1. **Set `all_cities`:** Contains all cities visited by both individuals.2. **Set `same_cities`:** Contains cities common to both individuals.3. **Set `different_cities`:** Contains cities unique to either individual.#### Sample Output for `all_cities`:```['Accra', 'Anaheim', 'Bangkok', 'Bend', 'Boise', 'Buenos Aires', 'Cairo', 'Edmonton', 'Lima', 'London', 'Memphis', 'Orlando', 'Paris', 'Seoul', 'Tokyo', 'Vancouver', 'Zurich']```**Note:** Since sets are unordered, the `sorted()` function is used to print them for comparison.#### Code Explanation:```pythonperson1_cities = {'Edmonton', 'Vancouver', 'Paris', 'Bangkok', 'Bend', 'Boise', 'Memphis', 'Zurich', 'Accra', 'Cairo'}person2_cities = {'Accra', 'Orlando', 'Tokyo', 'Paris', 'Anaheim', 'Buenos Aires', 'London', 'Lima', 'Seoul', 'Bend'}# Use set methods to create sets all_cities, same_cities, and different_cities.print(sorted(all_cities))print(sorted(same_cities))print(sorted(different_cities))```The program uses set methods to compute:- `all_cities` as the union of `person1_cities` and `person2_cities`.- `same_cities` as the intersection of the two sets.- `different_cities` as the symmetric difference between the sets. This program helps to easily identify shared and unique travel experiences.

PYTHON:- Python is a dynamic, bytecode-compiled, and interpreted language. Variable, parameter,…

The following program includes 10 cities that two people have visited. Write a program that creates: 1. A set all cities that contains all of the cities both people have visited. 2. A set same_cities that contains only cities found in both person1_cities and person2_cities. 3. A set different_cities that contains cities found only in person1_cities or only in person2_cities. Sample output for all cities: ['Accra', 'Anaheim', 'Bangkok', 'Bend', 'Boise', 'Buenos Aires', 'Cairo', 'Edmonton', 'Lima', 'London', 'Memphis', 'Orlando', 'Paris', 'Seoul', 'Tokyo', 'Vancouver', 'Zurich'] NOTE: Because sets are unordered, they are printed using the sorted() function here for comparison. 427862.2461524.qx3zqy7 1 person1_cities = {'Edmonton', 'Vancouver', 'Paris', 'Bangkok', 'Bend', 'Boise', 'Memphis', 'Zurich', 'Accra', 'C 2 person2_cities = {'Accra', 'Orlando', 'Tokyo', 'Paris', 'Anaheim', 'Buenos Aires', 'London', 'Lima', 'Seoul', 'B 3 4# Use set methods to create sets all cities, same_cities, and different_cities. 5 7 print (sorted (all_cities)) 8 print (sorted (same_cities)) 9 print (sorted (different_cities))

The following program includes 10 cities that two people have visited. Write a program that creates: 1. A set all cities that contains all of the cities both people have visited. 2. A set same_cities that contains only cities found in both person1_cities and person2_cities. 3. A set different_cities that contains cities found only in person1_cities or only in person2_cities. Sample output for all cities: ['Accra', 'Anaheim', 'Bangkok', 'Bend', 'Boise', 'Buenos Aires', 'Cairo', 'Edmonton', 'Lima', 'London', 'Memphis', 'Orlando', 'Paris', 'Seoul', 'Tokyo', 'Vancouver', 'Zurich'] NOTE: Because sets are unordered, they are printed using the sorted() function here for comparison. 427862.2461524.qx3zqy7 1 person1_cities = {'Edmonton', 'Vancouver', 'Paris', 'Bangkok', 'Bend', 'Boise', 'Memphis', 'Zurich', 'Accra', 'C 2 person2_cities = {'Accra', 'Orlando', 'Tokyo', 'Paris', 'Anaheim', 'Buenos Aires', 'London', 'Lima', 'Seoul', 'B 3 4# Use set methods to create sets all cities, same_cities, and different_cities. 5 7 print (sorted (all_cities)) 8 print (sorted (same_cities)) 9 print (sorted (different_cities))

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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Concept explainers

Problems on Number Theoretic Algorithm

Number theory is a branch in mathematics that deals with the study of integers and integer-valued functions. It involves studies related to prime numbers and properties of mathematical concepts such as rational numbers.

Question

### City Comparison Program

This program compares cities visited by two people and organizes them into three sets:

1. **Set `all_cities`:** Contains all cities visited by both individuals.
2. **Set `same_cities`:** Contains cities common to both individuals.
3. **Set `different_cities`:** Contains cities unique to either individual.

#### Sample Output for `all_cities`:

```
['Accra', 'Anaheim', 'Bangkok', 'Bend', 'Boise', 'Buenos Aires', 'Cairo', 'Edmonton', 'Lima', 'London', 'Memphis', 'Orlando', 'Paris', 'Seoul', 'Tokyo', 'Vancouver', 'Zurich']
```

**Note:** Since sets are unordered, the `sorted()` function is used to print them for comparison.

#### Code Explanation:

```python
person1_cities = {'Edmonton', 'Vancouver', 'Paris', 'Bangkok', 'Bend', 'Boise', 'Memphis', 'Zurich', 'Accra', 'Cairo'}
person2_cities = {'Accra', 'Orlando', 'Tokyo', 'Paris', 'Anaheim', 'Buenos Aires', 'London', 'Lima', 'Seoul', 'Bend'}

# Use set methods to create sets all_cities, same_cities, and different_cities.

print(sorted(all_cities))
print(sorted(same_cities))
print(sorted(different_cities))
```

The program uses set methods to compute:
- `all_cities` as the union of `person1_cities` and `person2_cities`.
- `same_cities` as the intersection of the two sets.
- `different_cities` as the symmetric difference between the sets.

This program helps to easily identify shared and unique travel experiences.

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