1.5 KiB
1.5 KiB
id | title | challengeType | forumTopicId | dashedName |
---|---|---|---|---|
5900f3841000cf542c50fe97 | Problem 24: Lexicographic permutations | 5 | 301885 | problem-24-lexicographic-permutations |
--description--
A permutation is an ordered arrangement of objects. For example, 3124 is one possible permutation of the digits 1, 2, 3 and 4. If all of the permutations are listed numerically or alphabetically, we call it lexicographic order. The lexicographic permutations of 0, 1 and 2 are:
012 021 102 120 201 210
What is the n
th lexicographic permutation of the digits 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9?
--hints--
lexicographicPermutations(699999)
should return a number.
assert(typeof lexicographicPermutations(699999) === 'number');
lexicographicPermutations(699999)
should return 1938246570.
assert(lexicographicPermutations(699999) == 1938246570);
lexicographicPermutations(899999)
should return 2536987410.
assert(lexicographicPermutations(899999) == 2536987410);
lexicographicPermutations(900000)
should return 2537014689.
assert(lexicographicPermutations(900000) == 2537014689);
lexicographicPermutations(999999)
should return 2783915460.
assert(lexicographicPermutations(999999) == 2783915460);
--seed--
--seed-contents--
function lexicographicPermutations(n) {
return n;
}
lexicographicPermutations(999999);
--solutions--
// solution required