Merge pull request #5 from SudhanshuMishra8826/master

Added python implementtion for queue

queue/Python/queue.py

@@ -0,0 +1,47 @@
+class Queue:  
+    def __init__(self, capacity): 
+        self.front = self.size = 0
+        self.rear = capacity -1
+        self.Q = [None]*capacity 
+        self.capacity = capacity 
+    def isFull(self): 
+        return self.size == self.capacity       
+    def isEmpty(self): 
+        return self.size == 0 
+    def EnQueue(self, item): 
+        if self.isFull(): 
+            print("Full") 
+            return
+        self.rear = (self.rear + 1) % (self.capacity) 
+        self.Q[self.rear] = item 
+        self.size = self.size + 1
+        print("%s enqueued to queue"  %str(item)) 
+
+    def DeQueue(self): 
+        if self.isEmpty(): 
+            print("Empty") 
+            return
+
+        print("%s dequeued from queue" %str(self.Q[self.front])) 
+        self.front = (self.front + 1) % (self.capacity) 
+        self.size = self.size -1
+
+    def que_front(self): 
+        if self.isEmpty(): 
+            print("Queue is empty") 
+
+        print("Front item is", self.Q[self.front]) 
+    def que_rear(self): 
+        if self.isEmpty(): 
+            print("Queue is empty") 
+        print("Rear item is",  self.Q[self.rear]) 
+if __name__ == '__main__': 
+
+    queue = Queue(30) 
+    queue.EnQueue(10) 
+    queue.EnQueue(20) 
+    queue.EnQueue(30) 
+    queue.EnQueue(40) 
+    queue.DeQueue() 
+    queue.que_front() 
+    queue.que_rear()