TWC324

1 files changed, 18 insertions, 0 deletions

diff --git a/challenge-324/deadmarshal/java/Ch2.java b/challenge-324/deadmarshal/java/Ch2.java
new file mode 100644
index 0000000000..5236df8664
--- /dev/null
+++ b/challenge-324/deadmarshal/java/Ch2.java
@@ -0,0 +1,18 @@
+public class Ch2 {
+  public static void main(String[] args) {
+    System.out.println(total_xor(new int[]{1, 3}));
+    System.out.println(total_xor(new int[]{5, 1, 6}));
+    System.out.println(total_xor(new int[]{3, 4, 5, 6, 7, 8}));
+  }
+
+  private static int total_xor(int[] arr) {
+    int n = arr.length, res = 0;
+    for (int i = 0; i < 1 << n; ++i) {
+      int s = 0;
+      for (int j = 0; j < n; ++j) if ((i >> j & 1) == 1) s ^= arr[j];
+      res += s;
+    }
+    return res;
+  }
+}
+