Day 4

day4/day4.py

@@ -0,0 +1,37 @@
+with open("./day4.txt", "r") as f:
+    file = f.read()
+
+pairs = file.split("\n")
+
+contain = 0
+
+for pair in pairs:
+    if pair == "":
+        continue
+    p = pair.split(",")
+    first = p[0].split("-")
+    second = p[1].split("-")
+    if int(first[0]) <= int(second[0]) and int(first[1]) >= int(second[1]):
+        contain += 1
+    elif int(first[0]) >= int(second[0]) and int(first[1]) <= int(second[1]):
+        contain += 1
+
+
+overlap = 0
+
+for pair in pairs:
+    if pair == "":
+        continue
+    p = pair.split(",")
+    first = p[0].split("-")
+    second = p[1].split("-")
+    if int(first[0]) in range(int(second[0]), int(second[1])+1):
+        overlap += 1
+    elif int(first[1]) in range(int(second[0]), int(second[1])+1):
+        overlap += 1
+    elif int(second[0]) in range(int(first[0]), int(first[1])+1):
+        overlap += 1
+    elif int(second[1]) in range(int(first[0]), int(first[1])+1):
+        overlap += 1
+
+print(overlap)