Finding Duplicates in an Array

MediumPython

Problem

How would you find duplicates in an array?

Return a list containing each value that appears at least twice, included only once. Implement def find_duplicates(nums):, where nums is a list of integers and the result preserves the order in which values are first detected as duplicates.

Constraints

0 <= nums.length <= 10000
-1000000000 <= nums[i] <= 1000000000
Return each duplicated value exactly once
Preserve duplicate-detection order

Function Signature

def find_duplicates(nums):

CodePython 3

You need to log in / sign up to run or submit.Ln 2

Run your code to see test output here.