add solution for day 3

src/cli/commands/day003.rs

@@ -1,4 +1,111 @@
 use crate::cli::PathBuf;
 use crate::util::read_lines;
 
+#[derive(Debug,Clone)]
+struct Backpack {
+    complete: Vec<Item>,
+    compartment1: Vec<Item>,
+    compartment2: Vec<Item>,
+    equal_items: Vec<Item>,
+}
+
+impl Backpack {
+    fn from_str(s: &str) -> Self {
+        let vchar: Vec<char> = s.chars().collect();
+        let (p1, p2) = vchar.split_at(vchar.len() / 2);
+        let com1:Vec<Item> = p1.iter().map(|c| Item::from_char(*c)).collect();
+        let com2:Vec<Item> = p2.iter().map(|c| Item::from_char(*c)).collect();
+        let mut eqvec:Vec<Item> = Vec::new();
+        for c in com1.iter(){
+            if com2.contains(&c) {
+                eqvec.push(c.clone());
+                break;
+            }
+        }
+        Backpack {
+            complete: vchar.iter().map(|c| Item::from_char(*c)).collect(),
+            compartment1: (com1),
+            compartment2: (com2),
+            equal_items: (eqvec),
+        }
+    }
+
+    fn print(&self){
+        println!("compartment 1 ({:?})", self.compartment1.len());
+        for c in self.compartment1.iter() {
+            println!("{:?}", c);
+        }
+        println!("compartment 2 ({:?})", self.compartment2.len());
+        for c in self.compartment2.iter() {
+            println!("{:?}", c);
+        }
+        println!("found equals ({:?})", self.equal_items.len());
+        for c in self.equal_items.iter() {
+            println!("{:?}", c);
+        }
+    }
+}
+
+#[derive(Debug, Clone)]
+struct Item {
+    itype: char,
+    prio: u8,
+}
+
+impl Item {
+    fn from_char(c: char) -> Self {
+        let value:u8;
+        if c.is_lowercase(){
+            value = c as u8 - 96;
+        }else{
+            value = c as u8 - 38;
+        }
+        Item { itype: (c), prio:(value) }
+    }
+}
+
+impl PartialEq for Item {
+    fn eq(&self, other: &Self) -> bool {
+        self.itype == other.itype
+    }
+}
+
+fn part1 (bpacks:&Vec<Backpack>){
+    let mut toatal_prio:u32 = 0;
+    for bp in bpacks.iter() {
+        for i in bp.equal_items.iter(){
+            toatal_prio += i.prio as u32;
+        }
+    }
+    println!("{:?}", bpacks.len()/3);
+    println!("{:?}", toatal_prio);
+}
+
+fn part2 (bpacks:&Vec<Backpack>){
+    let bpgroup = bpacks.chunks(3);
+    let mut mark_total: u32 = 0;
+    for bg in bpgroup {
+        let temp_vec:Vec<Backpack> = bg.to_vec();
+        let b1:&Backpack = temp_vec.get(0).unwrap();
+        let b2:&Backpack = temp_vec.get(1).unwrap();
+        let b3:&Backpack = temp_vec.get(2).unwrap();
+        for i in b1.complete.iter() {
+            if b2.complete.contains(&i) && b3.complete.contains(&i) {
+                mark_total += i.prio as u32;
+                break;
+            }
+        }
+    }
+    println!("{:?}", mark_total);
+}
+
+pub fn subcmd_day003(file: &Option<PathBuf>, alt: &bool) {
+    if let Ok(lines) = read_lines(file.as_ref().unwrap().as_path()) {
+        let bpacks: Vec<Backpack> = lines.map(|ln| Backpack::from_str(&ln.unwrap())).collect();
+        if *alt{
+            part2(&bpacks);
+        }else {
+            part1(&bpacks);
+        }
+    }
 }