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authorVincent Ambo <mail@tazj.in>2021-12-13T22·51+0300
committerVincent Ambo <mail@tazj.in>2021-12-13T23·15+0300
commit019f8fd2113df4c5247c3969c60fd4f0e08f91f7 (patch)
tree76a857f61aa88f62a30e854651e8439db77fd0ea /users/wpcarro/scratch/facebook/shuffle.py
parent464bbcb15c09813172c79820bcf526bb10cf4208 (diff)
parent6123e976928ca3d8d93f0b2006b10b5f659eb74d (diff)
subtree(users/wpcarro): docking briefcase at '24f5a642' r/3226
git-subtree-dir: users/wpcarro
git-subtree-mainline: 464bbcb15c09813172c79820bcf526bb10cf4208
git-subtree-split: 24f5a642af3aa1627bbff977f0a101907a02c69f
Change-Id: I6105b3762b79126b3488359c95978cadb3efa789
Diffstat (limited to 'users/wpcarro/scratch/facebook/shuffle.py')
-rw-r--r--users/wpcarro/scratch/facebook/shuffle.py17
1 files changed, 17 insertions, 0 deletions
diff --git a/users/wpcarro/scratch/facebook/shuffle.py b/users/wpcarro/scratch/facebook/shuffle.py
new file mode 100644
index 000000000000..21a6a96c6072
--- /dev/null
+++ b/users/wpcarro/scratch/facebook/shuffle.py
@@ -0,0 +1,17 @@
+from random import randint
+
+def get_random(i, j):
+    return randint(i, j)
+
+def shuffle(xs):
+    for i in range(len(xs)):
+        j = get_random(i, len(xs) - 1)
+        xs[i], xs[j] = xs[j], xs[i]
+
+xs = list(range(1, 53))
+print(xs)
+assert len(set(xs)) == 52
+shuffle(xs)
+assert len(set(xs)) == 52
+print(xs)
+print("Success!")