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A function that compare if there is duplicate numbers in a array


You have two arrays: one with the original numbers, and one with the result, where you collect the duplicate numbers.

You are looping over the original array. that is a good start.

array[i] is the current number of the original array.

How can you find out if it is has already occured before, and is therefore duplicate? that's the next step in your algorithm that you have to figure out.

you probably need another loop, or another array, and probably an if somewhere.


Categories : Javascript

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