2023 day 1 (alternative solution)

2023/day01-trebuchet/day01_2.jl

@@ -0,0 +1,45 @@
+function line2calib(line)
+    rx1 = r"^[a-z]*([0-9])"
+    rx2 = r"([0-9])[a-z]*$"
+    d1 = match(rx1, line).captures[1]
+    d2 = match(rx2, line).captures[1]
+    10*parse(Int, d1) + parse(Int, d2)
+end
+
+
+function todigit(s)
+    if s == "one"
+        1
+    elseif s == "two"
+        2
+    elseif s == "three"
+        3
+    elseif s == "four"
+        4
+    elseif s == "five"
+        5
+    elseif s == "six"
+        6
+    elseif s == "seven"
+        7
+    elseif s == "eight"
+        8
+    elseif s == "nine"
+        9
+    else
+        parse(Int, s)
+    end
+end
+
+
+function line2calib2(line)
+    rx1 = r"^[a-z]*?(\d|one|two|three|four|five|six|seven|eight|nine)"
+    rx2 = r".*(one|two|three|four|five|six|seven|eight|nine|\d)"
+    d1 = match(rx1, line).captures[1]
+    d2 = match(rx2, line).captures[1]
+    10*todigit(d1) + todigit(d2)
+end
+
+
+println("Part 1: ", sum(map(line2calib, eachline("input"))))
+println("Part 2: ", sum(map(line2calib2, eachline("input"))))