Skip to main content
formerly Exponent
Courses
Interview Courses
Product Management
New
Ace product interviews from strategy cases to technical skills.
Forward Deployed
Beta
Prep for FDE loops at Anthropic, OpenAI, Palantir, and more.
Engineering Management
Review key leadership and people management skills.
Software Engineering
Learn essential strategies for coding problems and more.
System Design
Define architectures, interfaces, and databases in a time crunch.
Data Science
Execute statistical techniques and experimentation effectively.
Machine Learning
Review building, evaluating, and deploying AI/ML models.
Data Engineering
Design complex data models and ETL pipelines.
More Courses
AI Engineering
New
Investment Banking
New
Generative AI
Security Engineer
TPM
Solutions Architect
UX / Product Design
BizOps & Strategy
View all courses
Loops
Experiences
Questions
Top Questions
Product Management
Behavioral Questions
Coding Questions
System Design
SQL Questions
Machine Learning
Investment Banking
Data Engineering
Browse all questions
Practice
Coaching
Mock Interviews & Coaching
Practice with our team of senior tech coaches.
Resume Review
Get your resume reviewed by a senior tech recruiter.
Salary Negotiation
Increase your offer with our expert negotiators.
How Coaching Works
Learn how expert coaching can help you land the job.
Pricing
Job Referrals
Get job referrals to top tech companies.
Blog
Check out our blog on tech interviewing tips, strategies, and more.
Resources
Members-only articles, videos, and interviews.
Work with us
Help us grow the Aced community.
Perks
Access exclusive member benefits.
For universities
Give your students tech interview prep.
For businesses
Improve your placement rates, outcomes, and more.
For recruiters
Post a job on Aced's exclusive job board.
Affiliate program
Recommend us to others and earn commission.
Search or ask AI...
⌘K
Log in
Sign up
Sign up
formerly Exponent
Search or ask AI...
⌘K
Courses
Product Management
New
Ace product interviews from strategy cases to technical skills.
Forward Deployed
Beta
Prep for FDE loops at Anthropic, OpenAI, Palantir, and more.
Engineering Management
Review key leadership and people management skills.
Software Engineering
Learn essential strategies for coding problems and more.
System Design
Define architectures, interfaces, and databases in a time crunch.
Data Science
Execute statistical techniques and experimentation effectively.
Machine Learning
Review building, evaluating, and deploying AI/ML models.
Data Engineering
Design complex data models and ETL pipelines.
View all courses
Loops
Experiences
Questions
Product Management
Behavioral Questions
Coding Questions
System Design
SQL Questions
Machine Learning
Investment Banking
Data Engineering
Browse all questions
Practice
Coaching
Mock Interviews & Coaching
Practice with our team of senior tech coaches.
Resume Review
Get your resume reviewed by a senior tech recruiter.
Salary Negotiation
Increase your offer with our expert negotiators.
How Coaching Works
Learn how expert coaching can help you land the job.
Pricing
More
Job Referrals
Get job referrals to top tech companies.
Blog
Check out our blog on tech interviewing tips, strategies, and more.
Resources
Members-only articles, videos, and interviews.
Work with us
Help us grow the Aced community.
Perks
Access exclusive member benefits.
For universities
Give your students tech interview prep.
For businesses
Improve your placement rates, outcomes, and more.
For recruiters
Post a job on Aced's exclusive job board.
Affiliate program
Recommend us to others and earn commission.
Sign up
Log in
All Questions
I was asked this
Save
11
Given a list of trades, iterate to return buy/sell pairs and overall profit.
1 interview
Data Structures & Algorithms
Reported last asked:
5 years ago
Details
Companies
Robinhood
Categories
Data Structures & Algorithms
Coding
Technical
Unlock detailed company stats for this question
Upgrade
Log in or sign up to answer this question.
Community answers
No answers contributed by the community yet.
Related questions
Given a list of integers, return 1 if the integer is a power of 2 and 0 if it is not.
Given a number of courses and a list of prerequisite pairs, return true or false depending on whether it is possible to finish all courses.
Given a list of conversion items between symbols, write an algorithm to return the conversion ratio for each pair of symbols.
Your answer
Submitting marks this question complete
Submit
