Initial commit: AoC solutions 2023-2025

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

2023/9.py

@@ -0,0 +1,44 @@
+import re
+
+def main():
+    with open("9-input.txt", 'r') as file:
+        lines = file.readlines()
+        values = []
+        for line in lines:
+            values.append(get_value(line))
+        summerize = 0
+        for v in values:
+            summerize += v
+        print(summerize)
+
+def get_value(line: []):
+    values = [int(digit) for digit in re.findall(r'-?\d+', line)]
+    values.reverse()
+    history = []
+    history.append(values)
+    for i, arr in enumerate(history):
+        if all(value == 0 for value in arr): 
+            break
+        m = []
+        history.append(m)
+        for ii, val in enumerate(arr):
+            if ii + 1 < len(arr):
+                diff = arr[ii+1] - val
+                m.append(diff)
+    
+    history.reverse()
+    for i, arr in enumerate(history):
+        if i == 0: 
+            arr.append(0)
+        else:
+            last_value = arr[len(arr) - 1]
+            next_value = last_value + history[i-1][len(history[i-1]) - 1]
+            arr.append(next_value)
+    last_index = len(history) - 1
+    input_value = history[last_index][len(history[last_index]) - 2]
+    last_value = history[last_index][len(history[last_index]) - 1]
+    print(f"{input_value} -> {last_value}")
+    return last_value
+
+if __name__ == "__main__":
+    main()