Added queues.py with content

Author: himaja-56

Data Structures and Algorithms/queues.py

@@ -0,0 +1,27 @@
+class Queue:
+    def __init__(self):
+        self.queue = []
+
+    def enqueue(self, item):
+        self.queue.append(item)
+
+    def dequeue(self):
+        if not self.is_empty():
+            return self.queue.pop(0)
+        return "Queue is empty"
+
+    def is_empty(self):
+        return len(self.queue) == 0
+
+    def peek(self):
+        return self.queue[0] if not self.is_empty() else None
+
+    def size(self):
+        return len(self.queue)
+
+# Example Usage
+q = Queue()
+q.enqueue(10)
+q.enqueue(20)
+print(q.dequeue())  # Output: 10
+print(q.peek())     # Output: 20