Problem 42494. Which permutation is it?
Let write some permutations of positive integers.
1: 1 2 3 4 5 6 ... 2: 2 1 3 4 ... 3: 1 3 2 4 ... 4: 2 3 1 4 ... 5: 3 1 2 4 ... 6: 3 2 1 4 ... 25: 1 2 3 5 4 ... 120: 5 4 3 2 1 6 7 ...
Given a permutation of integers in range 1:n, return it's index following above pattern.
See also: 42495
Solution Stats
Problem Comments
Solution Comments
Show commentsProblem Recent Solvers31
Suggested Problems
-
1105 Solvers
-
"Low : High - Low : High - Turn around " -- Create a subindices vector
525 Solvers
-
A (wrong) place for everything, and everything in its (wrong) place
50 Solvers
-
Rounding off numbers to n decimals
3967 Solvers
-
Check that number is whole number
3840 Solvers
More from this Author40
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!