Problem 42495. N-th permutation.
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 an index, find appropriate permutation and truncate sorted part on the right side.
example:
323: 3 5 1 6 4 2 7 8 9 10 ...
>> n = 323; >> whichperm(n) ans = 3 5 1 6 4
See also: 42494
Solution Stats
Problem Comments
Solution Comments
Show commentsProblem Recent Solvers33
Suggested Problems
-
42828 Solvers
-
4508 Solvers
-
Create logical matrix with a specific row and column sums
311 Solvers
-
182 Solvers
-
Find out sum and carry of Binary adder
1530 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!