Interview Question
Country: United States
is a comprehensive book on getting a job at a top tech company, while focuses on dev interviews and does this for PMs.
CareerCup's interview videos give you a real-life look at technical interviews. In these unscripted videos, watch how other candidates handle tough questions and how the interviewer thinks about their performance.
Most engineers make critical mistakes on their resumes -- we can fix your resume with our custom resume review service. And, we use fellow engineers as our resume reviewers, so you can be sure that we "get" what you're saying.
Our Mock Interviews will be conducted "in character" just like a real interview, and can focus on whatever topics you want. All our interviewers have worked for Microsoft, Google or Amazon, you know you'll get a true-to-life experience.
You can do this in linear time. Obtain the in-order traversal of both trees -- these are sorted sequences. Then, merge the two sequences (the same way the merge step of mergesort works). Since the resulting sequence will itself be sorted, all the duplicates can then be easily removed because they will be adjacent to each other.
- eugene.yarovoi January 31, 2015I use the term "sequence" because the exact implementation can vary. You can use arrays or linked lists to hold the intermediate sequences. You can also avoid the use of intermediate structures altogether -- just traverse the trees and keep track of where you are in the traversal (that's what using an iterator does). Then merge as you go, and don't output an element to the output if the previous element placed there is equal to the current one.