Given an infinite stream of string URLs, suggest a data structure to answer the following question in least possible time. Question: Which is the oldest unique (not reapeated) URL till now?
Be the first one to answer
Add answer anonymously...
Top Amazon Software Development Engineer interview questions & answers
Popular interview questions of Software Development Engineer
Top HR questions asked in Amazon Software Development Engineer
Stay ahead in your career. Get AmbitionBox app
Helping over 1 Crore job seekers every month in choosing their right fit company
65 L+
Reviews
4 L+
Interviews
4 Cr+
Salaries
1 Cr+
Users/Month
Contribute to help millions
Get AmbitionBox app