day 1 puzzle 1

src/day1/puzzle1.typ

@@ -0,0 +1,21 @@
+#import "/src/utils.typ": *
+
+#let solve(input) = {
+  let lines = input.split("\n")
+  let (l1, l2) = ((), ())
+  let reg = regex("^(\d+)\s+(\d+)$")
+  for line in lines {
+    let digits = line.match(reg)
+    l1.push(int(digits.captures.first()))
+    l2.push(int(digits.captures.last()))
+  }
+
+  let total = l1.sorted().zip(l2.sorted()).map(((a, b)) => calc.abs(a - b)).sum()
+  return total
+}
+
+#show-puzzle(
+  1,
+  solve,
+  example: 11
+)