Remove Duplicates From Array | Dataford Interview Questions

How do you write a function that removes duplicated elements in an array?

Implement remove_duplicates(arr) to return a new array containing each value once, preserving the order of its first occurrence. The input is an array of integers, and the original array must not be modified.

Contract

Input: arr, an array of integers. Output: a new array with duplicates removed.

Constraints

0 <= len(arr) <= 1000
-10^9 <= arr[i] <= 10^9
Return a new array and do not modify arr
Preserve the order of first occurrences

Function Signature

def remove_duplicates(arr):

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