day 1, part 2 in progress

aoc-1/src/main.rs

@@ -0,0 +1,60 @@
+// goal, figure out how many times the safe lands on 0 when following the instructions (input)
+// each line has a direction L (subtracts) or R (adds)
+// wraps between 99 -> 0, 99+1 = 0, 0-1=99
+
+// my soloution plan:
+// read in each line of the file, keep a count, add for R, subtract for L
+// after each line, if count%100=0 then we have hit 0, count that in a seperate counter
+// can also determine the resultant position by doing a count%100 at the end, maybe thats the 2nd star?
+
+// need to figure out:
+// reading in the file
+// getting the first letter of the string, getting the value
+// basic variables
+
+// okay part 1 done, moving onto part 2
+// after each move, lets do a modulo 100, count the hits then add/subtract the hits * 100 to get us back within the 0-99 range
+//making a part 2 folder now
+
+use std::fs;
+use regex::Regex;
+
+fn main() {
+    println!("lets begin advent of code, challenge 1");
+
+    let mut safe_value = 50;
+    let mut zero_hits = 0;
+    let file_path = "src/input.txt";
+
+
+    for line in fs::read_to_string(file_path).unwrap().lines() {
+        // println!("{line}");
+        // get the letter and the number, put them in different variables
+        let re = Regex::new(r"(?<direction>[RL])(?<value>\d+)").unwrap();
+        let Some(caps) = re.captures(line) else{
+            println!("sad cat");
+            return;
+        };
+        // println!("The direction is: {}", &caps["direction"]);
+        // println!("The value is: {}", &caps["value"]);
+        if &caps["direction"] == "L"{
+            safe_value -=  &caps["value"].parse::<i32>().unwrap();
+        }
+        else{
+            safe_value +=  &caps["value"].parse::<i32>().unwrap();
+        }
+
+        if safe_value%100 == 0{
+            zero_hits += 1;
+        }
+    }
+
+    let true_safe_value = safe_value%100;
+    println!("Final safe value: {true_safe_value}");
+    println!("Total zero hits: {zero_hits}")
+
+    // let contents = fs::read_to_string(file_path)
+    //     .expect("Should have been able to read the file");    
+    // println!("With text:\n{contents}");
+}
+