Hello Reader's, If you have an array having the multiple duplicate key values then by using Javascript you can make them skip. Let's see the example below:- Lets say an array full of duplicate data.

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Explanation: Total number of unique elements are 3, i.e[1,2,3] and Therefore return 3 after assigning [1,2,3] in the beginning of the array. Explanation: Total number of unique elements are 4, i.e[1,2 ...

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