Duplicate Elements in Array | Dataford Interview Questions

Write a simple program to find duplicate elements in an array using basic loops.

Implement find_duplicates(arr), which accepts a list of integers and returns each value that appears more than once, included only once in the output. Preserve the order in which duplicate values are first detected. The expected approach should use basic loops rather than a set or dictionary.

Constraints

0 <= len(arr) <= 1000
-10^9 <= arr[i] <= 10^9
Return each duplicated value at most once
Preserve duplicate discovery order

Function Signature

def find_duplicates(arr):

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Problem

Write a simple program to find duplicate elements in an array using basic loops.

Constraints

0 <= len(arr) <= 1000
-10^9 <= arr[i] <= 10^9
Return each duplicated value at most once
Preserve duplicate discovery order

Function Signature

def find_duplicates(arr):

Your question is Duplicate Elements in Array. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.