leetcode

Solution to some Leetcode problems written in C++
git clone git://git.dimitrijedobrota.com/leetcode.git
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1572.cpp (273B)

      1 class Solution {
      2   public:
      3     int diagonalSum(vector<vector<int>> &mat) {
      4         int n = mat.size(), sum = 0;
      5         for (int i = 0; i < n; i++)
      6             sum += mat[i][i] + mat[i][n - i - 1];
      7 
      8         if (n % 2) sum -= mat[n / 2][n / 2];
      9         return sum;
     10     }
     11 };