leetcode

Solution to some Leetcode problems written in C++

git clone git://git.dimitrijedobrota.com/leetcode.git

1814.cpp (480B)

0 class Solution { 1 public: 2 int countNicePairs(const vector<int> &nums) const { 3 static const int MOD = 1E9 + 7; 4 unordered_map<int, int> count; 5 int res = 0; 6 for (const int n : nums) { 7 a int rev = 0, tmp = n; 8 do { 9 rev = (rev * 10) + tmp % 10; 10 } while ((tmp /= 10) > 0); 11 const int crnt = n - rev; 12 res = (res + count[crnt]++) % MOD; 13 } 14 15 return res; 16 } 17 };