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Author: kerong2002

C++/2373. Largest Local Values in a Matrix.cpp

@@ -0,0 +1,20 @@
+#define _for2(x, end) for(int x = 0; x < end; ++x)
+#define _for3(x, start, end) for(int x = start; x < end; ++x)
+class Solution {
+public:
+    vector<vector<int>> largestLocal(vector<vector<int>>& grid) {
+        vector<vector<int>> ans(grid.size() - 2, vector<int> (grid[0].size() - 2, 0));
+        _for2(y, grid.size() - 2) {
+            _for2(x, grid[0].size() - 2) {
+                int max_num = 0;
+                _for3(i, y, y + 3) {
+                    _for3(j, x, x + 3) {
+                        max_num = max(max_num, grid[i][j]);
+                    }
+                }
+                ans[y][x] = max_num;
+            }
+        }
+        return ans;
+    }
+};