From 3fc57152a3f1f4d9d93f4e7454059a3198cf5f0c Mon Sep 17 00:00:00 2001
From: "exercism-solutions-syncer[bot]"
 <211797793+exercism-solutions-syncer[bot]@users.noreply.github.com>
Date: Tue, 18 Nov 2025 07:11:03 +0000
Subject: [PATCH] [Sync Iteration] java/gotta-snatch-em-all/1

---
 .../1/src/main/java/GottaSnatchEmAll.java     | 43 +++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 solutions/java/gotta-snatch-em-all/1/src/main/java/GottaSnatchEmAll.java

diff --git a/solutions/java/gotta-snatch-em-all/1/src/main/java/GottaSnatchEmAll.java b/solutions/java/gotta-snatch-em-all/1/src/main/java/GottaSnatchEmAll.java
new file mode 100644
index 0000000..d2a7b05
--- /dev/null
+++ b/solutions/java/gotta-snatch-em-all/1/src/main/java/GottaSnatchEmAll.java
@@ -0,0 +1,43 @@
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+class GottaSnatchEmAll {
+
+    static Set<String> newCollection(List<String> cards) {
+    return new HashSet<> (cards);
+    }
+
+    static boolean addCard(String card, Set<String> collection) {       
+        return collection.add(card);
+    }
+
+    static boolean canTrade(Set<String> myCollection, Set<String> theirCollection) {
+        Set<String> myExtras = new HashSet<>(myCollection);
+        Set<String> theirExtras = new HashSet<>(theirCollection);
+
+        // Remove common cards
+        myExtras.removeAll(theirCollection);
+        theirExtras.removeAll(myCollection);
+
+        return (myExtras.size() > 0) && (theirExtras.size() > 0);
+
+    }
+
+    static Set<String> commonCards(List<Set<String>> collections) {
+        Set<String> common = new HashSet<> (collections.get(0));
+
+        for(Set<String> c : collections){
+            common.retainAll(c);
+        }
+        return common;
+    }
+
+    static Set<String> allCards(List<Set<String>> collections) {
+        Set<String> all = new HashSet<>();
+        for(Set<String> c : collections){
+            all.addAll(c);
+        }
+        return all;
+    }
+}