diff --git a/Alice/LLQueue.java b/Alice/LLQueue.java
new file mode 100644
index 0000000..843fb10
--- /dev/null
+++ b/Alice/LLQueue.java
@@ -0,0 +1,28 @@
+// Student name: Alice
+
+package edu.utopiatech.cs1337.hw1;
+
+import java.util.LinkedList;
+
+public class LLQueue implements QueueInterface {
+    private LinkedList backingLL;
+
+    public LLQueue() {
+        backingLL = new LinkedList();
+    }
+
+    @Override
+    public void enqueue(Object o) {
+        backingLL.add(o);
+    }
+
+    @Override
+    public Object dequeue() {
+        return backingLL.remove();
+    }
+
+    @Override
+    public boolean isEmpty() {
+        return backingLL.isEmpty();
+    }
+}
diff --git a/Alice/LLStack.java b/Alice/LLStack.java
new file mode 100644
index 0000000..b0ce5cd
--- /dev/null
+++ b/Alice/LLStack.java
@@ -0,0 +1,30 @@
+// Student name: Alice
+
+package edu.utopiatech.cs1337.hw1;
+
+import java.util.EmptyStackException;
+import java.util.LinkedList;
+import java.util.NoSuchElementException;
+
+public class LLStack implements StackInterface {
+    private LinkedList backingLL;
+
+    public LLStack() {
+        backingLL = new LinkedList();
+    }
+
+    @Override
+    public void push(Object o) {
+        backingLL.push(o);
+    }
+
+    @Override
+    public Object pop() {
+        return backingLL.remove();
+    }
+
+    @Override
+    public boolean isEmpty() {
+        return backingLL.isEmpty();
+    }
+}
diff --git a/Bob/LLStack.java b/Bob/LLStack.java
new file mode 100644
index 0000000..5eb4419
--- /dev/null
+++ b/Bob/LLStack.java
@@ -0,0 +1,34 @@
+// Student name: Bob
+
+package edu.utopiatech.cs1337.hw1;
+
+import java.util.EmptyStackException;
+import java.util.LinkedList;
+import java.util.NoSuchElementException;
+
+public class LLStack implements StackInterface {
+    private LinkedList backingLL;
+
+    public LLStack() {
+        backingLL = new LinkedList();
+    }
+
+    @Override
+    public void push(Object o) {
+        backingLL.push(o);
+    }
+
+    @Override
+    public Object pop() {
+        try {
+            return backingLL.pop();
+        } catch (EmptyStackException e) {
+            throw new NoSuchElementException();
+        }
+    }
+
+    @Override
+    public boolean isEmpty() {
+        return backingLL.isEmpty();
+    }
+}
diff --git a/Charlie/LLQueue.java b/Charlie/LLQueue.java
new file mode 100644
index 0000000..fc419a5
--- /dev/null
+++ b/Charlie/LLQueue.java
@@ -0,0 +1,28 @@
+// Student name: Charlie
+
+package edu.utopiatech.cs1337.hw1;
+
+import java.util.LinkedList;
+
+public class LLQueue implements QueueInterface {
+    private LinkedList backingLL;
+
+    public LLQueue() {
+        backingLL = new LinkedList();
+    }
+
+    @Override
+    public void enqueue(Object o) {
+        backingLL.add(o);
+    }
+
+    @Override
+    public Object dequeue() {
+        return backingLL.remove();
+    }
+
+    @Override
+    public boolean isEmpty() {
+        return backingLL.isEmpty();
+    }
+}
diff --git a/Charlie/LLStack.java b/Charlie/LLStack.java
new file mode 100644
index 0000000..ef87ac1
--- /dev/null
+++ b/Charlie/LLStack.java
@@ -0,0 +1,30 @@
+// Student name: Charlie
+
+package edu.utopiatech.cs1337.hw1;
+
+import java.util.EmptyStackException;
+import java.util.LinkedList;
+import java.util.NoSuchElementException;
+
+public class LLStack implements StackInterface {
+    private LinkedList backingLL;
+
+    public LLStack() {
+        backingLL = new LinkedList();
+    }
+
+    @Override
+    public void push(Object o) {
+        backingLL.push(o);
+    }
+
+    @Override
+    public Object pop() {
+        return backingLL.pop();
+    }
+
+    @Override
+    public boolean isEmpty() {
+        return backingLL.isEmpty();
+    }
+}
diff --git a/Dave/LLQueue.java b/Dave/LLQueue.java
new file mode 100644
index 0000000..88f8dfe
--- /dev/null
+++ b/Dave/LLQueue.java
@@ -0,0 +1,28 @@
+// Student name: Dave
+
+package edu.utopiatech.cs1337.hw1;
+
+import java.util.LinkedList;
+
+public class LLQueue implements QueueInterface {
+    private LinkedList backingLL;
+
+    public LLQueue() {
+        backingLL = new LinkedList();
+    }
+
+    @Override
+    public void enqueue(Object o) {
+        backingLL.add(o);
+    }
+
+    @Override
+    public Object dequeue() {
+        return backingLL.remove();
+    }
+
+    @Override
+    public boolean isEmpty() {
+        return backingLL.isEmpty();
+    }
+}
diff --git a/Dave/LLStack.java b/Dave/LLStack.java
new file mode 100644
index 0000000..3924b5d
--- /dev/null
+++ b/Dave/LLStack.java
@@ -0,0 +1,34 @@
+// Student name: Dave
+
+package edu.utopiatech.cs1337.hw1;
+
+import java.util.EmptyStackException;
+import java.util.LinkedList;
+import java.util.NoSuchElementException;
+
+public class LLStack implements StackInterface {
+    private LinkedList backingLL;
+
+    public LLStack() {
+        backingLL = new LinkedList();
+    }
+
+    @Override
+    public void push(Object o) {
+        backingLL.push(o);
+    }
+
+    @Override
+    public Object pop() {
+        try {
+            return backingLL.pop();
+        } catch (EmptyStackException e) {
+            throw new NoSuchElementException();
+        }
+    }
+
+    @Override
+    public boolean isEmpty() {
+        return backingLL.isEmpty();
+    }
+}