Using a Set is literally part of the blog post. None of the other possible solutions from the post are low level. In fact they all use lambda expressions, which is even more complicated to grasp than a Set, which consists of unique values (per definition).
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Using a Set is literally part of the blog post. None of the other possible solutions from the post are low level. In fact they all use lambda expressions, which is even more complicated to grasp than a Set, which consists of unique values (per definition).