Find Duplicates in Array | Dataford Interview Questions

Find the elements which are present more than once (in an array).

Asked in the Coding test stage. Solved with a map in C++.

Implement find_duplicates(arr). Return a list containing each distinct repeated value once, ordered by its first appearance in arr.

Input and Output

arr is a list of integers. Return a list of integers.

def find_duplicates(arr):

Your question is Find Duplicates 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.

Find the elements which are present more than once (in an array).

Asked in the Coding test stage. Solved with a map in C++.

Implement find_duplicates(arr). Return a list containing each distinct repeated value once, ordered by its first appearance in arr.

arr is a list of integers. Return a list of integers.

def find_duplicates(arr):

Your question is Find Duplicates 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.