TWC332

1 files changed, 16 insertions, 0 deletions

diff --git a/challenge-332/deadmarshal/java/Ch2.java b/challenge-332/deadmarshal/java/Ch2.java
new file mode 100644
index 0000000000..ba0eeb0fa3
--- /dev/null
+++ b/challenge-332/deadmarshal/java/Ch2.java
@@ -0,0 +1,16 @@
+import java.util.HashMap;
+import java.util.Map;
+
+public class Ch2 {
+  public static void main(String[] args) {
+    System.out.println(odd_letters("weekly"));
+    System.out.println(odd_letters("perl"));
+    System.out.println(odd_letters("challenge"));
+  }
+
+  private static boolean odd_letters(String s) {
+    Map<Character, Integer> h = new HashMap<>();
+    for (var c : s.toCharArray()) h.merge(c, 1, Integer::sum);
+    return h.values().stream().allMatch(a -> a % 2 != 0);
+  }
+}