Question

Write a program to create a set operation calculator applying object oriented programming principles discussed in the class so far. The set operation calculator need to be enclosed inside one class with different methods responsible for performing the different operations listed below. When the constructor (def __init__() ) is called during object instantiation, two separate objects of this class need to be instantiated two sets S1 and S2. These two set objects can be instantiated from two python lists taken from user input. Objects need to be instantiated from a main function and the program will ask the user for what operation he/she wants to perform. A menu with options (eg. option 1 : for addition, option 2: union etc.) should be made available to the user. The set calculator should perform the following operations with those :

1. union.

2. Intersection.

3.subtraction (S1-S2).

The operations listed above (eg. union, intersection, subtraction etc.) should be enclosed in separate python methods with appropriate parameters. There should be a separate main function from where objects will be instantiated and functions will be called with appropriate parameters.

Sample input and outputs for the operations

:Sample input given to the program:

A= [2,4,6]B= [3,6,9]Output:1.Instantiate two ‘set operation calculator’ object from lists A and B2.Union:Union : {2,3,4,5,6,9}3.Intersection:intersection : {6}4.Subtraction:subtraction : {2,4}

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Answer 1

it n not in self.data: self.data.append(n) def union(self, otherSet): result = self.data[:: ] + otherSet.data[::] return mySet(result) Python 3.7.4 (default, Jul 9 2019, 00:06:43) [GCC 6.3.0 20170516] on linux SetA: [3, 4, 5, 6, 7, 8, 9] SetB: [3, 5, 7, 9, 11, 13, 15] Menu => 1. Union, 2. Intersection, 3. Difference (A - B), 4. Quit Enter choice: 1 result: [3, 4, 5, 6, 7, 8, 9, 11, 13, 15] def intersection(self, otherSet): result = [] SetA: [3, 4, 5, 6, 7, 8, 9] SetB: [3, 5, 7, 9, 11, 13, 15] Menu => 1. Union, 2. Intersection, 3. Difference (A - B), 4. Quit Enter choice: 2 result: [3, 5, 7, 9] for x in self.data: if x in otherSet.data: result.append(x) return mySet(result) SetA: [3, 4, 5, 6, 7, 8, 9] SetB: [3, 5, 7, 9, 11, 13, 15) Menu => 1. Union, 2. Intersection, 3. Difference (A - B), 4. Quit Enter choice: 3 result: [4, 6, 8] def subtraction(self, otherSet): result = [] SetA: [3, 4, 5, 6, 7, 8, 9] SetB: [3, 5, 7, 9, 11, 13, 15] Menu => 1. Union, 2. Intersection, 3. Difference (A - B), 4. Quit Enter choice: 4 for x in self.data: if x not in otherset.data: result.append(x) return mySet(result) def __str__(self): return str(self.data) 33 def menu(seta, setB): print('SetA: ', seta) print('SetB: , setB) print('Menu => 1. Union, 2. Intersection, 3. Difference (A - B), 4. Quit')

class mySet:

        def __init__(self, nums = []):
                self.data = []
                
                for n in nums:
                        if n not in self.data:
                                self.data.append(n)

        def union(self, otherSet):
                result = self.data[::] + otherSet.data[::]
                return mySet(result)

        def intersection(self, otherSet):
                result = []
                
                for x in self.data:
                        if x in otherSet.data:
                                result.append(x)
                return mySet(result)

        def subtraction(self, otherSet):
                result = []
                
                for x in self.data:
                        if x not in otherSet.data:
                                result.append(x)
                return mySet(result)

        def __str__(self):
                return str(self.data)
        
def menu(setA, setB):
        print('SetA: ', setA)
        print('SetB: ', setB)
        print('Menu => 1. Union, 2. Intersection, 3. Difference (A - B), 4. Quit')
        return int(input('Enter choice: '))

def main():
        setA = mySet([3, 4, 5, 6, 7, 8, 9])
        setB = mySet([3, 5, 7, 9, 11, 13, 15])

        while True:
                choice = menu(setA, setB)
                if choice == 1:
                        print('result: ', setA.union(setB))
                if choice == 2:
                        print('result: ', setA.intersection(setB))
                if choice == 3:
                        print('result: ', setA.subtraction(setB))
                if choice == 4:
                        break
                print()

main()  

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