1 files changed, 0 insertions, 35 deletions
diff --git a/works/solutions/leetcode/cpp/304.cpp b/works/solutions/leetcode/cpp/304.cpp
deleted file mode 100644
index ab22281..0000000
--- a/works/solutions/leetcode/cpp/304.cpp
+++ /dev/null
@@ -1,35 +0,0 @@
-#include <vector>
-
-using std::vector;
-
-class NumMatrix {
-private:
-  std::vector<std::vector<int>> prefix_sum_;
-
-public:
-  NumMatrix(vector<vector<int>> &matrix)
-      : prefix_sum_(
-            matrix.size() + 1,
-            std::vector<int>(matrix.empty() ? 1 : matrix.front().size() + 1)) {
-    const int row_count = matrix.size();
-    const int col_count = matrix.empty() ? 0 : matrix.front().size();
-
-    for (int i = 0; i < row_count; i++)
-      for (int j = 0; j < col_count; j++) {
-        prefix_sum_[i + 1][j + 1] = prefix_sum_[i][j + 1] +
-                                    prefix_sum_[i + 1][j] - prefix_sum_[i][j] +
-                                    matrix[i][j];
-      }
-  }
-
-  int sumRegion(int row1, int col1, int row2, int col2) {
-    return prefix_sum_[row1][col1] - prefix_sum_[row2 + 1][col1] -
-           prefix_sum_[row1][col2 + 1] + prefix_sum_[row2 + 1][col2 + 1];
-  }
-};
-
-/**
- * Your NumMatrix object will be instantiated and called as such:
- * NumMatrix* obj = new NumMatrix(matrix);
- * int param_1 = obj->sumRegion(row1,col1,row2,col2);
- */
-\ No newline at end of file