Merge pull request #12624 from deadmarshal/TWC337

TWC337

1 files changed, 25 insertions, 0 deletions

diff --git a/challenge-337/deadmarshal/java/Ch2.java b/challenge-337/deadmarshal/java/Ch2.java
new file mode 100644
index 0000000000..0d13408113
--- /dev/null
+++ b/challenge-337/deadmarshal/java/Ch2.java
@@ -0,0 +1,25 @@
+public class Ch2 {
+  public static void main(String[] args) {
+    System.out.println(odd_matrix(2, 3, new int[][]{{0, 1}, {1, 1}}));
+    System.out.println(odd_matrix(2, 2, new int[][]{{1, 1}, {0, 0}}));
+    System.out.println(odd_matrix(3, 3, new int[][]{{0, 0}, {1, 2}, {2, 1}}));
+    System.out.println(odd_matrix(1, 5, new int[][]{{0, 2}, {0, 4}}));
+    System.out.println(odd_matrix(4, 2, new int[][]{{1, 0}, {3, 1}, {2, 0}, {0, 1}}));
+  }
+
+  private static int odd_matrix(int row, int col, int[][] m) {
+    int res = 0;
+    int[][] g = new int[row][col];
+    for (int[] e : m) {
+      int r = e[0], c = e[1];
+      for (int i = 0; i < row; ++i) g[i][c]++;
+      for (int j = 0; j < col; ++j) g[r][j]++;
+    }
+    for (int[] rows : g) {
+      for (int v : rows) {
+        res += v % 2;
+      }
+    }
+    return res;
+  }
+}