Move into 2022 folder

2022/4/onestar-1.py

@@ -0,0 +1,24 @@
+count = 0
+with open("input.txt", "r") as f:
+    for line in f.readlines():
+        line = line.strip("\n")
+        # "A-B,C-D"
+        twoelves = line.split(",")
+        # ["A-B", "C-D"]
+
+        # "A-B"
+        leftelf = twoelves[0].split("-")
+        # ["A", "B"]
+        lb1 = int(leftelf[0])
+        ub1 = int(leftelf[1])
+
+        # "C-D"
+        rightelf = twoelves[1].split("-")
+        # ["C", "D"]
+        lb2 = int(rightelf[0])
+        ub2 = int(rightelf[1])
+
+        if ((lb1 <= lb2 and ub1 >= ub2) or # Elf 1 fully covers elf 2
+            (lb2 <= lb1 and ub2 >= ub1)): # Elf 2 fully covers elf 1
+            count += 1
+print(count)

2022/4/onestar.py

@@ -0,0 +1,11 @@
+count = 0
+with open("input.txt", "r") as f:
+    for line in f.readlines():
+        line = line.strip("\n")
+        # Some python magic to split out the strings and convert them to integers
+        pair = [x.split("-") for x in line.split(",")]
+        pair = [[int(y) for y in x] for x in pair]
+        if ((pair[0][0] <= pair[1][0] and pair[0][1] >= pair[1][1]) or 
+            (pair[1][0] <= pair[0][0] and pair[1][1] >= pair[0][1])):
+            count += 1
+print(count)

2022/4/twostar.py

@@ -0,0 +1,26 @@
+elves = []
+count = 0
+
+def inrange(lb, ub, check):
+    """Returns true iff check is inclusive in-between lb and ub."""
+    return check >= lb and check <= ub
+
+with open("input.txt", "r") as f:
+    for line in f.readlines():
+        line = line.strip("\n")
+        # Some python magic to split out the strings and convert them to integers
+        pair = [x.split("-") for x in line.split(",")]
+        pair = [[int(y) for y in x] for x in pair]
+        elves.append(pair)
+        # Elves is now a list of list of lists.
+    for elf in elves:
+        lb1 = elf[0][0]
+        lb2 = elf[1][0]
+        ub1 = elf[0][1]
+        ub2 = elf[1][1]
+        if (inrange(lb1, ub1, ub2) or
+            inrange(lb1, ub1, lb2) or
+            inrange(lb2, ub2, ub1) or
+            inrange(lb2, ub2, lb1)):
+            count += 1
+print(count)