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Update isDuplicates.md

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jun-low
2020-10-04 20:53:53 +08:00
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@ -6,7 +6,7 @@ tags: array,intermediate
Check if there's duplicate values in a flat array.
- Convert original array into a Set.
- The `.size()` returns the number of (unique) elements in a Set object.
- The `Set.prototype.size` returns the number of (unique) elements in a Set object.
- Compare the lengths of the array and the Set.