Organized everything, update README

1 files changed, 28 insertions, 0 deletions

diff --git a/14-Longest-Collatz-Sequence/collatz.py b/14-Longest-Collatz-Sequence/collatz.py
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+++ b/14-Longest-Collatz-Sequence/collatz.py
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+import PIL
+import math
+
+# Problem 14 Longest Collatz sequence
+# Note, a little slow, takes about 15 seconds.
+# There is probably a more efficient solution out there
+chain = []
+biggo = []
+
+
+def collatz(seed):
+    chain.append(seed)
+    if(seed == 1):
+        return 0
+    if(seed % 2 == 0):
+        seed = seed/2
+    else:
+        seed = 3*seed + 1
+    collatz(seed)
+
+
+for n in range(1, pow(10, 6)):
+    collatz(n)
+    if(len(chain) > len(biggo)):
+        biggo = chain
+    chain = []
+print(biggo)
+print("Has " + str(len(biggo)) + " numbers.")