Python: Get all possible unique subsets from a set of distinct integers

Last update on July 09 2025 10:44:26 (UTC/GMT +8 hours)

4. Get All Unique Subsets from a Set of Distinct Integers

Write a Python program to get all possible unique subsets from a set of distinct integers.

Sample Solution:

Python Code:

class py_solution:
    def sub_sets(self, sset):
        return self.subsetsRecur([], sorted(sset))
    
    def subsetsRecur(self, current, sset):
        if sset:
            return self.subsetsRecur(current, sset[1:]) + self.subsetsRecur(current + [sset[0]], sset[1:])
        return [current]

print(py_solution().sub_sets([4,5,6]))

Sample Output:

[[], [6], [5], [5, 6], [4], [4, 6], [4, 5], [4, 5, 6]] 

Pictorial Presentation:

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Python class that uses recursion to generate all possible unique subsets of a set of distinct integers.
• Write a Python class that implements an iterative approach to generate the power set of distinct integers and returns it as a list of lists.
• Write a Python class that uses bitwise operations to compute all unique subsets of a given set of integers.
• Write a Python class that sorts and prints all subsets of a set in increasing order of their lengths, using recursion and backtracking.

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• Python Class Exercises Home ↩
• Python Exercises Home ↩

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Next: Write a Python program to find a pair of elements (indices of the two numbers) from a given array whose sum equals a specific target number.

Python Code Editor:

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