TWC308

1 files changed, 16 insertions, 0 deletions

diff --git a/challenge-308/deadmarshal/java/Ch2.java b/challenge-308/deadmarshal/java/Ch2.java
new file mode 100644
index 0000000000..115480247c
--- /dev/null
+++ b/challenge-308/deadmarshal/java/Ch2.java
@@ -0,0 +1,16 @@
+import java.util.Arrays;
+
+public class Ch2 {
+  public static void main(String[] args) {
+    System.out.println(Arrays.toString(decode_xor(new int[]{1, 2, 3}, 1)));
+    System.out.println(Arrays.toString(decode_xor(new int[]{6, 2, 7, 3}, 4)));
+  }
+
+  private static int[] decode_xor(int[] arr, int first) {
+    int[] res = new int[arr.length + 1];
+    res[0] = first;
+    for (int i = 0; i < arr.length; ++i)
+      res[i + 1] = res[i] ^ arr[i];
+    return res;
+  }
+}