Added day 2017-17

Author: Piratmac

2017/17-Spinlock.py

@@ -0,0 +1,72 @@
+# -------------------------------- Input data -------------------------------- #
+import os
+
+test_data = {}
+
+test = 1
+test_data[test]   = {"input": 3,
+                     "expected": ['Unknown', 'Unknown'],
+                    }
+
+test = 'real'
+input_file = os.path.join(os.path.dirname(__file__), 'Inputs', os.path.basename(__file__).replace('.py', '.txt'))
+test_data[test] = {"input": 344,
+                     "expected": ['996', '1898341'],
+                    }
+
+# -------------------------------- Control program execution -------------------------------- #
+
+case_to_test  = 'real'
+part_to_test  = 2
+verbose_level = 1
+
+# -------------------------------- Initialize some variables -------------------------------- #
+
+puzzle_input           = test_data[case_to_test]['input']
+puzzle_expected_result = test_data[case_to_test]['expected'][part_to_test-1]
+puzzle_actual_result   = 'Unknown'
+
+
+# -------------------------------- Actual code execution -------------------------------- #
+
+spinlock = [0]
+
+if part_to_test == 1:
+    position = 0
+    for i in range (1, 2017+1):
+        position += puzzle_input
+        position %= len(spinlock)
+        spinlock = spinlock[:position+1] + [i] + spinlock[position+1:]
+        position += 1
+        position %= len(spinlock)
+
+    puzzle_actual_result = spinlock[(position + 1) % len(spinlock)]
+
+
+else:
+    position = 0
+    number_after_zero = 0
+    spinlock_length = 1
+    for i in range (1, 50000000+1):
+        position += puzzle_input
+        position %= spinlock_length
+        spinlock_length += 1
+        if position == 0:
+            number_after_zero = i
+        position += 1
+        position %= spinlock_length
+
+    puzzle_actual_result = number_after_zero
+
+
+
+# -------------------------------- Outputs / results -------------------------------- #
+
+if verbose_level >= 3:
+    print ('Input : ' + puzzle_input)
+print ('Expected result : ' + str(puzzle_expected_result))
+print ('Actual result   : '   + str(puzzle_actual_result))
+
+
+
+