Adding 3rd assignment, stacks and queues

Stacks&Queues/TQueue.cpp

@@ -0,0 +1,55 @@
+#include "TQueue.h"
+#include <stdexcept>
+
+
+// Time and space O(1) - only adds to the end of the queue and wraps around when needed
+void TQueue::Enqueue(const int item)
+{
+    if (IsFull())
+        throw std::overflow_error("Queue Overflow");
+    queue[tail] = item;
+    tail = (tail + 1) % MAX_SIZE;
+    count++;
+}
+
+// Both O(1)
+int TQueue::Dequeue()
+{
+    if (IsEmpty())
+        throw std::underflow_error("Empty Queue");
+    const int item = queue[head];
+    head = (head + 1) % MAX_SIZE;
+    count--;
+    return item;
+}
+
+// Both O(1)
+int TQueue::Peek() const
+{
+    if (IsEmpty())
+        throw std::underflow_error("Empty Queue");
+    return queue[head];
+}
+
+// Both O(1)
+bool TQueue::IsEmpty() const
+{
+    return count == 0;
+}
+
+bool TQueue::IsFull() const
+{
+    return count == MAX_SIZE;
+}
+
+int TQueue::GetTail() const
+{
+    if (IsEmpty())
+        throw std::underflow_error("Empty Queue");
+    return tail;
+}
+
+
+
+
+