Problem 46037. Count alternating permutations
In an alternating permutation of numbers 1 to n, the numbers are arranged so that they alternately increase and decrease. For example, there are five alternating permutations of the numbers 1, 2, 3, and 4:
1 3 2 4
1 4 2 3
2 3 1 4
2 4 1 3
3 4 1 2
Write a function to count the alternating permutations for a set of n numbers.
Solution Stats
Problem Comments
Solution Comments
Show commentsProblem Recent Solvers10
Suggested Problems
-
Find the numeric mean of the prime numbers in a matrix.
9028 Solvers
-
Arrange Vector in descending order
12305 Solvers
-
264 Solvers
-
1134 Solvers
-
Chebyshev polynomials of the 2nd Kind
70 Solvers
More from this Author304
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!