Added two additional methods - 217 Contains Duplicates #224
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I think I'll link #189 so all the discussion about this can happen in one place. |
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Thanks @qasimala ! |
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I've added two additional methods on how to solve the problem in JavaScript using Set() and another method of using Map() that makes the code more readable.
I've also added some comments that explain the code.
If you're only accepting one solution per problem, please don't complete this pull request.