sanity check--what am I doing wrong copying the fibonacci function?

At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

Get our expert's

answer on brainly

SEE EXPERT ANSWER

Get your free account and access expert answers to this and thousands of other questions.

A community for students.

sanity check--what am I doing wrong copying the fibonacci function?

MIT 6.00 Intro Computer Science (OCW)
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

Get this expert

answer on brainly

SEE EXPERT ANSWER

Get your free account and access expert answers to this and thousands of other questions

I think this is exactly what Professor Guttag uses in Lecture 13: def fib(n): global numCalls numCalls += 1 print 'fib called with ', n if n <= 1: return 1 else: return fib(n-1) + fib(n-2) numCalls = 0 n = 6 res = fib(n) print 'fib of ', n,' = ',res, 'numCalls = ',res but when I run it, it gives me fib(6) = 13 What am I missing?
Nevermind. 13 is the answer he got in the lecture as well. I was just printing res instead of numCalls and that got me confused. Although, according to http://en.wikipedia.org/wiki/Fibonacci_number, fib(6) actually IS 8, which is what he 'corrects' early in the lecture.
Fib(n) is the sum of the previous two numbers in the series. It's traditional to start with 0,1 which makes fib(6)=8 (the series is 0,1,1,2,3,5,8). But, you can also start with 1,1 (which is easier to code; if n<=1 return 1), which makes fib(6)=13 (the series is 1,1,2,3,5,8,13).

Not the answer you are looking for?

Search for more explanations.

Ask your own question

Other answers:

Thanks!

Not the answer you are looking for?

Search for more explanations.

Ask your own question