Initial commit

lab3-hash-function/app/modes/analyze_uniformity.py

@@ -0,0 +1,44 @@
+import string
+import random
+from modes.hash_mode import HashMode
+
+
+class UniformityAnalyzer:
+    """
+    Анализ равномерности распределения хэшей.
+    """
+
+    def run(self, variant: str, count: int = 100, buckets: int = 10, bytes: int = 16) -> dict:
+        hasher = HashMode()
+        alphabet = string.ascii_lowercase + string.digits
+
+        # случайные сообщения
+        messages = [
+            "".join(random.choice(alphabet)
+                    for _ in range(random.randint(5, 10)))
+            for _ in range(count)
+        ]
+
+        # хэши
+        hashes = [hasher.run(variant, msg, bytes=bytes) for msg in messages]
+
+        # берём первые 8 hex-символов → число
+        values = [int(h[:8], 16) for h in hashes]
+        values.sort()
+
+        # диапазоны
+        min_val, max_val = values[0], values[-1]
+        step = (max_val - min_val) / buckets if max_val > min_val else 1
+
+        distribution = [0] * buckets
+        for v in values:
+            idx = min(int((v - min_val) / step), buckets - 1)
+            distribution[idx] += 1
+
+        return {
+            "count": count,
+            "buckets": buckets,
+            "messages": messages,
+            "hashes": hashes,
+            "distribution": distribution,
+        }