lexicographicPermutations(699999)
should return 1938246570.
testString: assert(lexicographicPermutations(699999) == 1938246570);
- text: lexicographicPermutations(899999)
should return 2536987410.
testString: assert(lexicographicPermutations(899999) == 2536987410);
- text: lexicographicPermutations(900000)
should return 2537014689.
testString: assert(lexicographicPermutations(900000) == 2537014689);
- text: lexicographicPermutations(999999)
should return 2783915460.
testString: assert(lexicographicPermutations(999999) == 2783915460);
```