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-rw-r--r--day1/exercise/collatz.py7
1 files changed, 7 insertions, 0 deletions
diff --git a/day1/exercise/collatz.py b/day1/exercise/collatz.py
new file mode 100644
index 0000000..2b980d7
--- /dev/null
+++ b/day1/exercise/collatz.py
@@ -0,0 +1,7 @@
+a = -1
+while a > 1:
+ print a
+ if a % 2:
+ a = a * 3 + 1
+ else:
+ a /= 2