2023 dec 9th

Python/2023/09/main.py

@@ -0,0 +1,37 @@
+import math
+
+input = open("input", 'r')
+
+data = []
+
+for line in input:
+    line = line.rstrip()
+    data.append([int(value) for value in line.split(" ")])
+
+next_values = []
+
+def getSubSequence(seq):
+    new_seq = [y - x for x,y in zip(seq, seq[1:])]
+    for item in new_seq:
+        if item != 0:
+            return getSubSequence(new_seq) + new_seq[-1]
+    return 0
+
+for sequence in data:
+    next_values.append(getSubSequence(sequence) + sequence[-1])
+
+print(sum(next_values))
+
+prev_values = []
+
+def getSubSequence2(seq):
+    new_seq = [y - x for x,y in zip(seq, seq[1:])]
+    for item in new_seq:
+        if item != 0:
+            return new_seq[0] - getSubSequence2(new_seq)
+    return 0
+
+for sequence in data:
+    prev_values.append(sequence[0] - getSubSequence2(sequence))
+
+print(sum(prev_values))