enqueue

1 files changed, 31 insertions, 0 deletions

diff --git a/9618-42-mj-2023/Question2_J2023.py b/9618-42-mj-2023/Question2_J2023.py
new file mode 100644
index 0000000..5b82e6a
--- /dev/null
+++ b/9618-42-mj-2023/Question2_J2023.py
@@ -0,0 +1,31 @@
+#2a
+class SaleData:
+    def __init__(self, sale_quantity, sale_id):
+        self.Quantity = sale_quantity
+        self.ID = sale_id
+#2b
+global CircularQueue
+CircularQueue = [SaleData(-1, "") for i in range(5)]
+global Head, Tail
+global NumberOfItems
+Head = 0
+Tail = 0
+NumberOfItems = 0
+
+#2c
+def Enqueue(NewRecord):
+    global NumberOfItems, Head, Tail, CircularQueue
+    if NumberOfItems >= 5:
+        return -1
+    CircularQueue[Tail] = NewRecord
+    NumberOfItems += 1
+    if Tail < len(CircularQueue) - 1:
+        Tail += 1
+    else:
+        Tail = 0
+    return 1
+# while True:
+#     Enqueue(SaleData(int(input("qty: ")), input("id: ")))
+#     if not input("c: "):
+#         break
+# [print(obj) for obj in CircularQueue]