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
-
Find the numeric mean of the prime numbers in a matrix.
8903 Solvers
-
1406 Solvers
-
14644 Solvers
-
1516 Solvers
-
Find my daddy long leg (No 's')
2364 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!