Added solution for AoC 2022/3, in python and in rust

Signed-off-by: TuDatTr <tuan-dat.tran@tudattr.dev>

2022/day-3_rucksack_reorganization-alt/.gitignore

@@ -0,0 +1 @@
+/input.txt

2022/day-3_rucksack_reorganization-alt/README.md

@@ -0,0 +1,9 @@
+# Rucksack Reorganization
+Created this solution first, since the implementation seemed fairly easy.
+Turns out it was.
+
+<sub> Could use some more list comprehensions though </sub>
+
+## Usage
+Expecting the `input.txt` in the same folder as the `main.py`
+`python main.py`

2022/day-3_rucksack_reorganization-alt/main.py

@@ -0,0 +1,26 @@
+def task3a():
+    sum = 0
+    for rucksack in open('input.txt', 'r').read().splitlines():
+        left = rucksack[:int(len(rucksack)/2)]
+        right= rucksack[int(len(rucksack)/2):]
+        
+        common = [c for c in left if c in right][0] 
+        priority = ord(common) - ord('a') + 1  if common.islower() else ord(common) - ord('A') + 27 
+        # print(f"{common}: {priority}")
+        sum += priority
+    return sum
+print(f'Task 3a: {task3a()}')
+
+def task3b():
+    sum  = 0
+    lines = open('input.txt', 'r').read().splitlines()
+    for rucksacks in [lines[n:n+3] for n in range(0, len(lines), 3)]:
+        common = [d for d in [c for c in rucksacks[0] if c in rucksacks[1]] if d in rucksacks[2]][0]
+        priority = ord(common) - ord('a') + 1  if common.islower() else ord(common) - ord('A') + 27 
+        # print(f"{common}: {priority}")
+        sum += priority
+    return sum
+
+print(f'Task 3b: {task3b()}')
+
+