Find Duplicates in Array | Dataford Interview Questions

Write a program to find duplicate elements in an array and explain its time complexity.

Implement find_duplicates(nums). Return a list containing each value that appears at least twice, exactly once, ordered by its second occurrence. The input is a list of integers, and the output is a list of integers.

Constraints

0 <= nums.length <= 10^4
-10^9 <= nums[i] <= 10^9
Return each duplicated value exactly once
Preserve the order of each value's second occurrence

Function Signature

def find_duplicates(nums):

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Problem

Write a program to find duplicate elements in an array and explain its time complexity.

Constraints

0 <= nums.length <= 10^4
-10^9 <= nums[i] <= 10^9
Return each duplicated value exactly once
Preserve the order of each value's second occurrence

Function Signature

def find_duplicates(nums):

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.