init commitHEADmaster

2 files changed, 99 insertions, 0 deletions

diff --git a/queue_array.py b/queue_array.py
new file mode 100644
index 0000000..4356b4d
--- /dev/null
+++ b/queue_array.py
@@ -0,0 +1,53 @@
+class Queue:
+    def __init__(self, size=7):
+        self.size = size+1
+        self.queue = [0]*self.size
+        self.write = 0
+        self.read = 0
+
+    def full(self):
+        return ((self.write+1)%self.size) == ((self.read)%self.size)
+
+    def empty(self):
+        return self.write == self.read
+    
+    def enqueue(self, value):
+        """
+        Will add item to queue without overflowing
+        """
+        if (self.full()):
+            return
+        
+        self.queue[self.write] = value
+        self.write += 1
+
+        if (self.write == self.size):
+            self.write = 0
+
+    def dequeue(self):
+        if (self.empty()):
+            return None
+        
+        val = self.queue[self.read]
+        self.read += 1
+
+        if (self.read == self.size):
+            self.read = 0
+        
+        return val
+
+
+if __name__ == "__main__":
+    que = Queue()
+    que.enqueue(1)
+    que.enqueue(2)
+    que.enqueue(3)
+    print(que.dequeue())
+    que.enqueue(4)
+    que.enqueue(5)
+    print(que.dequeue())
+    que.enqueue(6)
+    que.enqueue(7)
+    print(que.dequeue())
+    que.enqueue(7)
+    print(que.queue)
diff --git a/test_queue_array.py b/test_queue_array.py
new file mode 100644
index 0000000..b2ae945
--- /dev/null
+++ b/test_queue_array.py
@@ -0,0 +1,46 @@
+import unittest
+import queue_array as q
+
+class TestQueue(unittest.TestCase):
+    def setUp(self):
+        self.que = q.Queue()
+
+    def test_empty(self):
+        self.assertTrue(self.que.empty())
+        self.que.enqueue(5)
+        self.assertFalse(self.que.empty())
+    
+    def test_full(self):
+        self.assertFalse(self.que.full())
+        self.que.enqueue(5)
+        self.que.enqueue(5)
+        self.que.enqueue(5)
+        self.que.enqueue(5)
+        self.que.enqueue(5)
+        self.que.enqueue(5)
+        self.que.enqueue(5)
+        self.assertTrue(self.que.full())
+
+    def test_dequeue2(self):
+        self.que.enqueue(1)
+        self.que.enqueue(2)
+        self.assertEqual(self.que.dequeue(), 1)
+        self.que.enqueue(3)
+        self.que.enqueue(4)
+        self.assertEqual(self.que.dequeue(), 2)
+        self.que.enqueue(5)
+        self.que.enqueue(6)
+        self.assertEqual(self.que.dequeue(), 3)
+        self.que.enqueue(7)
+        self.assertEqual(self.que.dequeue(), 4)
+        self.assertEqual(self.que.dequeue(), 5)
+        self.assertEqual(self.que.dequeue(), 6)
+        self.assertEqual(self.que.dequeue(), 7)
+        self.que.enqueue(8)
+        self.assertEqual(self.que.dequeue(), 8)
+        
+
+
+
+if __name__ == "__main__":
+    unittest.main()
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