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.
Let's first ask a question: how the path is constructed?
The user chooses one of 'n' available points, then goes to another point of 'n-1' points left, then goes to another point of 'n-2' points, and so on.
How many different paths of length 'n' are there?
Assumming 9 points on the screen.
For length 9, there are 9*8*7*6*5*4*3*2*1 paths.
For length 8, there are 9*8*7*6*5*4*3*2 paths.
For length 7, there are 9*8*7*6*5*4*3 paths.
For length 6, there are 9*8*7*6*5*4 paths.
For length 5, there are 9*8*7*6*5 paths.
For length 4, there are 9*8*7*6 paths.
Python code of the solution:
- random_crane January 04, 2016