Added 2019 day 04

2019/04/code.py

@@ -0,0 +1,62 @@
+""" https://adventofcode.com/2019/day/4 """
+
+def readFile():
+    with open(f"{__file__.rstrip('code.py')}input.txt", "r") as f:
+        return [int(vals) for vals in f.readline().split("-")]
+
+def getNumbers(min, max):
+    result = set()
+    for i in range(min, max+1):
+        nums = [i // 100000, (i // 10000) % 10, (i // 1000) % 10, 
+            (i // 100) % 10, (i // 10) % 10, i % 10]
+        if isNotDecreasing(nums) and hasDoubleAdjacentValue(nums):
+            result.add(i)
+    return result
+
+def isNotDecreasing(nums):
+    for x in range(1, 6):
+        if nums[x] < nums[x - 1]: 
+            return False
+    return True
+
+def hasDoubleAdjacentValue(nums):
+    for x in range(1, 5):
+        if nums[x] == nums[x - 1] or nums[x] == nums[x + 1]:
+            return True
+    return False
+
+def isNotPartOfBiggerGroup(nums):
+    for x in range(1, 6):
+        if nums[x] == nums[x - 1] and nums.count(nums[x]) == 2:
+            return True
+    return False
+
+def part1(vals : list):
+    return len(getNumbers(vals[0], vals[1]))
+
+def part2(vals : list):
+    result = set()
+    numbers = getNumbers(vals[0], vals[1] + 1)
+    for i in numbers:
+        nums = [i // 100000, (i // 10000) % 10, (i // 1000) % 10, 
+            (i // 100) % 10, (i // 10) % 10, i % 10]
+        if isNotPartOfBiggerGroup(nums):
+            result.add(i)
+    return len(result)
+
+def test():
+    assert(isNotDecreasing([1, 1, 1, 1, 1, 1]) == True)
+    assert(isNotDecreasing([2, 2, 3, 4, 5, 0]) == False)
+    assert(isNotDecreasing([1, 2, 3, 7, 8, 9]) == True)
+    assert(hasDoubleAdjacentValue([1, 1, 1, 1, 1, 1]) == True)
+    assert(hasDoubleAdjacentValue([2, 2, 3, 4, 5, 0]) == True)
+    assert(hasDoubleAdjacentValue([1, 2, 3, 7, 8, 9]) == False)
+    assert(isNotPartOfBiggerGroup([1,1,2,2,3,3]) == True)
+    assert(isNotPartOfBiggerGroup([1,2,3,4,4,4]) == False)
+    assert(isNotPartOfBiggerGroup([1,1,1,1,2,2]) == True)
+
+if __name__ == "__main__":
+    test()
+    vals = readFile()
+    print(f"Part 1: {part1(vals)}")
+    print(f"Part 2: {part2(vals)}")