✅ Shuffle in place

Category	Ability
Status	Passing
Test	tests/test_rng.py::test_shuffle_in_place

shuffle() modifies the list in place and returns None.

Preconditions

• rng = DeterministicRNG(seed=1)

• lst = [10, 20, 30]

Action

• result = rng.shuffle(lst)

Expected Postconditions

• result is None.

• lst has been reordered.

Assertions

assert result is None
    assert sorted(lst) == [10, 20, 30]