Day 9

Author: chrispochwex

9-2.txt

@@ -0,0 +1,20 @@
+35
+20
+15
+25
+47
+40
+62
+55
+65
+95
+102
+117
+150
+182
+127
+219
+299
+277
+309
+576

9.py

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+import os
+
+fileName = "9.txt"
+preamble = 25
+part1Num = -1
+part1Index = -1
+with open(fileName) as file:
+    numbers = file.readlines()
+    for i in range(len(numbers)):
+        numbers[i] = int(numbers[i])
+    i = preamble
+    isValid = True
+    while i  < len(numbers) and isValid:
+        checkValue = int(numbers[i])
+        isValid = False
+        for j in range(preamble):
+            for k in range(preamble):
+                if j != k and checkValue == (int(numbers[i - j - 1]) + int(numbers[i - k - 1])):
+                    isValid = True
+                    break
+                k = k + 1
+            if isValid:
+                break
+            j = j + 1
+        if isValid:
+            i = i + 1
+    print(numbers[i], i, len(numbers))
+    part1Num = int(numbers[i])
+    part1Index = i
+
+    #part 2
+    indexMin = -1
+    indexMax = -1
+    for startIndex in range(part1Index):
+        sum = 0
+        for i in range(part1Index - startIndex):
+            if sum < part1Num:
+                sum = sum + int(numbers[startIndex + i])
+            else:
+                break
+            i = i + 1
+        if sum == part1Num:
+            indexMin = startIndex
+            indexMax = startIndex + i
+            break
+        startIndex = startIndex + 1
+    
+    newRange = numbers[indexMin:indexMax]
+    newRange.sort()
+    print(newRange[0] + newRange[-1])