Problem 60613. Complete a 2nd order difference sequence
In Cody Problem 59791 ChrisR asks us to find the integer that completes a randomly sorted geometric sequence with one missing element. This problem is similar, but it deals with 2nd order difference sequences which is sorted.
For example, in the list [1 4 9 16 25], the first difference is [1 3 5 7 9] and the second [2 2 2 2].
So when x=[1 4 9 25] is provided, return 16.
Solution Stats
Solution Comments
Show commentsProblem Recent Solvers3
Suggested Problems
-
2900 Solvers
-
Project Euler: Problem 10, Sum of Primes
1691 Solvers
-
Matrix indexing with two vectors of indices
714 Solvers
-
We love vectorized solutions. Problem 1 : remove the row average.
810 Solvers
-
Golomb's self-describing sequence (based on Euler 341)
152 Solvers
More from this Author12
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!