2020 AoC, Days 1-4

2020/Day 2/Solution.py

@@ -0,0 +1,32 @@
+input_file = "/tmp/aocinput"
+
+def letter_count():
+    valid_passwords = 0
+
+    with open(input_file) as passwords:
+        line = passwords.readline()
+        while line and line != "\n":
+            elements = line.split(" ")
+            min_req, max_req = elements[0].split("-")
+            password_count = elements[2].count(elements[1][0])
+            if int(min_req) <= password_count <= int(max_req):
+                valid_passwords += 1
+
+            line = passwords.readline()
+
+    print(f"There are {valid_passwords} valid passwords")
+
+def letter_position():
+    valid_passwords = 0
+
+    with open(input_file) as passwords:
+        line = passwords.readline()
+        while line and line != "\n":
+            elements = line.split(" ")
+            first_pos, second_pos = elements[0].split("-")
+            if (elements[2][int(first_pos) - 1] == elements[1][0]) ^ (elements[2][int(second_pos) - 1] == elements[1][0]):
+                valid_passwords += 1
+
+            line = passwords.readline()
+
+    print(f"There are {valid_passwords} valid passwords")