leetcode

Solution to some Leetcode problems written in C++
git clone git://git.dimitrijedobrota.com/leetcode.git
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0357.cpp (258B)

      1 class Solution {
      2   public:
      3     int countNumbersWithUniqueDigits(const int n) const {
      4         if (n == 0) return 1;
      5 
      6         int res = 10, acc = 9, crnt = 9;
      7         for (int i = 2; i <= n; i++)
      8             res += acc *= crnt--;
      9 
     10         return res;
     11     }
     12 };