* feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
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id, title, challengeType, videoUrl, dashedName
id | title | challengeType | videoUrl | dashedName |
---|---|---|---|---|
5900f3841000cf542c50fe97 | 问题24:字典排列 | 5 | problem-24-lexicographic-permutations |
--description--
置换是对象的有序排列。例如,3124是数字1,2,3和4的一种可能的排列。如果所有排列都以数字或字母顺序列出,我们称之为词典顺序。字典排列0,1和2是:
012 021 102 120 201 210
数字0,1,2,3,4,5,6,7,8和9的第n
个词典排列是什么?
--hints--
lexicographicPermutations(699999)
应该返回1938246570。
assert(lexicographicPermutations(699999) == 1938246570);
lexicographicPermutations(899999)
应该返回2536987410。
assert(lexicographicPermutations(899999) == 2536987410);
lexicographicPermutations(900000)
应该返回2537014689。
assert(lexicographicPermutations(900000) == 2537014689);
lexicographicPermutations(999999)
应该返回2783915460。
assert(lexicographicPermutations(999999) == 2783915460);
--seed--
--seed-contents--
function lexicographicPermutations(n) {
return n;
}
lexicographicPermutations(999999);
--solutions--
// solution required