Remove Duplicates Problem Statement

You are given an array of integers. The task is to remove all duplicate elements and return the array while maintaining the order in which the elements were provided.

Example:

Input:
T = 2 N = 5 arr = [1, 2, 2, 3, 1] N = 4 arr = [4, 5, 5, 4]
Output:
[1, 2, 3] [4, 5]
Explanation:

In the first test case, the output removes duplicates while preserving order, resulting in [1, 2, 3]. In the second test case, the output is [4, 5].

Constraints:

  • 1 ≤ T ≤ 10
  • 1 ≤ N ≤ 5*103
  • -105 ≤ arr[i] ≤ 105
  • Time Limit: 1 sec
AnswerBot
4d

Remove duplicates from an array of integers while maintaining the original order.

  • Use a set to keep track of unique elements while iterating through the array.

  • Add elements to the set if they are not al...read more

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