Initial commit

1 files changed, 51 insertions, 0 deletions

diff --git a/src/day1pt2.rs b/src/day1pt2.rs
new file mode 100644
index 0000000..99407dd
--- /dev/null
+++ b/src/day1pt2.rs
@@ -0,0 +1,51 @@
+use regex::Regex;
+
+fn parse(s: &str) -> u32 {
+    match s {
+        "zero" => 0,
+        "one" => 1,
+        "two" => 2,
+        "three" => 3,
+        "four" => 4,
+        "five" => 5,
+        "six" => 6,
+        "seven" => 7,
+        "eight" => 8,
+        "nine" => 9,
+        br => br.parse().unwrap(),
+    }
+}
+
+fn parse_bw(s: &str) -> u32 {
+    match s {
+        "orez" => 0,
+        "eno" => 1,
+        "owt" => 2,
+        "eerht" => 3,
+        "ruof" => 4,
+        "evif" => 5,
+        "xis" => 6,
+        "neves" => 7,
+        "thgie" => 8,
+        "enin" => 9,
+        br => br.parse().unwrap(),
+    }
+}
+
+pub fn main() {
+    let mut sum: u32 = 0;
+    let re = Regex::new(r"\d|zero|one|two|three|four|five|six|seven|eight|nine").unwrap();
+    let re_bw = Regex::new(r"\d|ozer|eno|owt|eerht|ruof|evif|xis|neves|thgie|enin").unwrap();
+
+    let txt = std::fs::read_to_string("./input/day1.txt").unwrap();
+    for line in txt.lines() {
+        let capt = re.find_iter(line).collect::<Vec<_>>();
+        let str_bw = String::from_iter(line.chars().rev());
+        let capt_bw = re_bw.find_iter(&str_bw).collect::<Vec<_>>();
+
+        let x =
+            parse(capt.get(0).unwrap().as_str()) * 10 + parse_bw(capt_bw.get(0).unwrap().as_str());
+        sum += x;
+    }
+    println!("{}", sum)
+}