Dataford
Interview QuestionsInterview GuidesExperiencesCoaching
New
Pricing
Get started
Dataford
Popular roles
Software EngineerData AnalystData ScientistData EngineerBusiness AnalystAI EngineerMachine Learning EngineerProduct Manager
Browse
Browse All RolesEvery role hub, from analyst to MLBrowse All CompaniesCompany-specific interview loopsAll Interview GuidesThe full guide library
Top questions by role
Software EngineerData AnalystData ScientistData EngineerBusiness AnalystAI EngineerMachine Learning EngineerProduct Manager
Top questions by skill
SQLPythonStatisticsMachine LearningA/B TestingSystem DesignGenerative AIProduct SenseMetricsBehavioral
Browse all questions →Try a mock interview
Experiences
Practice
Mock InterviewsTimed interview simulations with feedbackCoaching1:1 coaching with people at your target companiesSuccess PathYour 6-week structured planModulesCurated lessons by topicWebinarsTalks from ex-Big Tech data leadsPlaygroundA free-form scratch editor
Learn
BlogInterview strategy and career adviceTech Job Market ReportHiring trends across data and AI rolesFor UniversitiesDataford for career centersAbout DatafordWho we are and how we build
Pricing
Build my plan
String Array Cleanup and Sort
00:00
5 left

String Array Cleanup and Sort

EasyPython

Problem

Please write an algorithm that takes in an array of strings, removes all unnecessary elements, and sorts it in ascending order.

For this task, unnecessary elements are duplicate strings. Retain one occurrence of each distinct string, then sort the result using case-sensitive lexicographic order.

Input: A list of strings. Output: A new list containing each distinct string exactly once, sorted in ascending order.

Constraints

  • 0 <= len(strings) <= 10^5
  • Each element is a string
  • String comparison is case-sensitive
  • The input list may contain duplicate strings

Function Signature

def clean_and_sort(strings):
Interviewer

Your question is String Array Cleanup and Sort. 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.

You need to log in / sign up to run or submit.
CodePython 3
Sign up free to run your codeLog inLn 2
Run your code to see test output here.