https://leetcode.com/problems/lemonade-change

easy/lemonade_change.py

@@ -0,0 +1,24 @@
+# https://leetcode.com/problems/lemonade-change
+from typing import List
+
+class Solution:
+    def lemonadeChange(self, bills: List[int]) -> bool:
+        inventory: List[int] = [0, 0]
+        for bill in bills:
+            match bill:
+                case 5:
+                    inventory[0] += 1
+                case 10:
+                    inventory[0] -= 1
+                    inventory[1] += 1
+                    if inventory[0] < 0:
+                        return False
+                case 20:
+                    if inventory[1] == 0:
+                        inventory[0] -= 3
+                    else:
+                        inventory[1] -= 1
+                        inventory[0] -= 1
+                    if inventory[0] < 0 or inventory[1] < 0:
+                        return False
+        return True