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
-
5975 Solvers
-
625 Solvers
-
Generate a random matrix A of (1,-1)
336 Solvers
-
114 Solvers
-
Find the sides of an isosceles triangle when given its area and height from its base to apex
1975 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!