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
ExperiencesCoaching
New
Practice
Mock InterviewsTimed interview simulations with feedbackSuccess 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
Get started
Two Largest Values in Tree
00:00
5 left

Two Largest Values in Tree

EasyPython

Problem

Find the maximum from a set of child nodes using a loop to track the two largest values.

Implement max_child_value(child_values), where child_values is a non-empty list of integers. Return the largest value, while tracking both the largest and second-largest values during one loop. For example, [4, 9, 2, 7] returns 9, and [-8, -3, -12] returns -3. Assume the list contains at least two values and may contain duplicates.

Constraints

  • 2 <= len(child_values) <= 1000
  • -10^9 <= child_values[i] <= 10^9
  • Values may be duplicated

Function Signature

def max_child_value(child_values):
Interviewer

Your question is Two Largest Values in Tree. 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.
Code
Sign up free to run your codeLog inLn 2
Run your code to see test output here.