Merge pull request #250 from Semi-2005/master

Add weighted sampling function for Semi Kazar in Week02

Author: canbula

Week02/weighted_semi_kazar.py

@@ -0,0 +1,9 @@
+import random
+
+def weighted_srs(data, n, weights, with_replacement = False):
+    if not (with_replacement or weights):
+        sample = random.sample(data, n)
+    else:
+        sample = random.choices(data, weights=weights, k=n)
+
+    return sample