Initial Commit

backend/test_probs.py

@@ -0,0 +1,27 @@
+import random
+
+PRIZES = [
+    {"rank": 1, "name": "1st Prize", "miles": 10000, "probability": 0.20},
+    {"rank": 2, "name": "2nd Prize", "miles": 5000, "probability": 0.30},
+    {"rank": 3, "name": "3rd Prize", "miles": 2000, "probability": 0.50},
+]
+
+def draw_prize():
+    rand_val = random.random()
+    cumulative = 0.0
+    for prize in PRIZES:
+        cumulative += prize["probability"]
+        if rand_val <= cumulative:
+            return prize
+    return PRIZES[-1]
+
+counts = {1: 0, 2: 0, 3: 0}
+trials = 100000
+
+for _ in range(trials):
+    res = draw_prize()
+    counts[res["rank"]] += 1
+
+print("Results for 100,000 trials:")
+for rank, count in counts.items():
+    print(f"Rank {rank}: {count/trials*100:.2f}%")