Merge pull request #12192 from deadmarshal/TWC326

TWC326

1 files changed, 21 insertions, 0 deletions

diff --git a/challenge-326/deadmarshal/java/Ch2.java b/challenge-326/deadmarshal/java/Ch2.java
new file mode 100644
index 0000000000..67ae25bcc0
--- /dev/null
+++ b/challenge-326/deadmarshal/java/Ch2.java
@@ -0,0 +1,21 @@
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+import java.util.stream.IntStream;
+
+public class Ch2 {
+  public static void main(String[] args) {
+    System.out.println(decompressed_list(new int[]{1, 3, 2, 4}));
+    System.out.println(decompressed_list(new int[]{1, 1, 2, 2}));
+    System.out.println(decompressed_list(new int[]{3, 1, 3, 2}));
+  }
+
+  private static List<Integer> decompressed_list(int[] arr) {
+    return IntStream.range(0, arr.length / 2)
+      .mapToObj(i -> Arrays.stream(new int[arr[2 * i]])
+        .map(val -> arr[2 * i + 1])
+        .boxed())
+      .flatMap(s -> s)
+      .collect(Collectors.toList());
+  }
+}