new structure for 2018, added license information

2018/02/code.py

@@ -0,0 +1,54 @@
+""" https://adventofcode.com/2018/day/2 """
+
+def readFile():
+    l = []
+    with open(f"{__file__.rstrip('code.py')}input.txt", "r") as f:
+        line = f.readline()
+        while line:
+            l.append(line)
+            line = f.readline()
+    return l
+
+def count(data : dict, n : int):
+    sum = 0
+    for val in data:
+        for char in val:
+            if data[val][char] == n:
+                sum += 1
+                break
+    return sum
+
+def part1(vals : list):
+    data = {}
+    # Count for each letter per word
+    for val in vals:
+        data[val] = {}
+        for char in val:
+            if char in data[val]:
+                data[val][char] = data[val][char] + 1
+            else:
+                data[val][char] = 1
+    
+    return count(data, 2) * count(data, 3)
+
+def getCommonLetters(a : str, b : str):
+    lenMin = min(len(a), len(b))
+    commons = [a[i] for i in range(lenMin) if a[i] == b[i]]
+    return "".join(commons)
+
+def part2(vals : list):
+    maxLen = 0
+    maxStr = ""
+    for i in range(len(vals)):
+        for j in range(i + 1, len(vals)):
+            cur = getCommonLetters(vals[i], vals[j])
+            if len(cur) > maxLen:
+                maxLen = len(cur)
+                maxStr = cur
+
+    return maxStr
+
+if __name__ == "__main__":
+    vals = readFile()
+    print(f"Part 1: {part1(vals)}")
+    print(f"Part 2: {part2(vals)}")