hourGlassChallenge

HourGlass.java

@@ -0,0 +1,34 @@
+public class HourGlass {
+
+  /*
+   * 1 1 1 0 0 0
+   * 0 1 0 0 0 0
+   * 1 1 1 0 0 0
+   * 0 0 0 0 0 0
+   * 0 0 0 0 0 0
+   * 0 0 0 0 0 0
+   */
+
+  public static void main(String[] args) {
+
+    int[][] ar = { { 1, 1, 1, 0, 0, 0 }, { 0, 1, 0, 0, 0, 0 }, { 1, 1, 1, 0, 0, 0 }, { 0, 0, 2, 4, 4, 0 },
+        { 0, 0, 0, 2, 0, 0 }, { 0, 0, 1, 2, 4, 0 } };
+    System.out.println(sumInt(ar));
+  }
+
+  private static int sumInt(int[][] arr) {
+    int rows = arr.length;
+    int columns = arr[0].length;
+
+    int total = -63;
+    for (int i = 0; i < rows - 2; i++) {
+      for (int j = 0; j < columns - 2; j++) {
+        int currentSum = arr[i][j] + arr[i][j + 1] + arr[i][j + 2] + arr[i + 1][j + 1] + arr[i + 2][j]
+            + arr[i + 2][j + 1] + arr[i + 2][j + 2];
+        total = Math.max(total, currentSum);
+      }
+    }
+    return total;
+  }
+
+}