Odd-Occurrence IDs Function | Dataford Interview Questions

Create a function that takes in an array of ids and returns the ids that were present in the array an odd number of times.

Use the signature def odd_occurrence_ids(ids):. Return each qualifying ID once, preserving the order of its first appearance. IDs are integers, and an empty input should return an empty array.

Example: [4, 7, 4, 7, 7] returns [7]; [1, 2, 1, 2] returns [].

Constraints

0 <= len(ids) <= 1000
Each ID is an integer
Return each qualifying ID exactly once
Preserve the order of first appearance

Function Signature

def odd_occurrence_ids(ids):

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