60 lines
1.9 KiB
Rust
60 lines
1.9 KiB
Rust
use std::fs::File;
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use std::io::{self, BufRead};
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use std::path::Path;
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use std::collections::HashMap;
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fn main() {
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let file_path = String::from("../aoc_03a/input");
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let mut result = 0;
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let mut i = 0;
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let mut hashmap = HashMap::new();
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println!("In file {}", file_path);
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if let Ok(lines) = read_lines(file_path) {
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// Consumes the iterator, returns an (Optional) String
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for line in lines {
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if i == 0 {
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hashmap = HashMap::new();
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}
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if let Ok(ip) = line {
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println!("{:?}", hashmap);
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for c in ip.chars() {
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if i == 0 {
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hashmap.insert(c, 100);
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}
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else if i == 1 {
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*hashmap.entry(c).or_insert(2) += 1;
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}
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else if i == 2 {
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match hashmap.get(&c) {
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Some(&number) => {
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if number > 100 {
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println!("{}", c);
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if c >= 'A' && c <= 'Z' {
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result += 27 + c as u32 - 'A' as u32;
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}
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else {
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result += 1 + c as u32 - 'a' as u32;
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}
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break;
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}
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}
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_ => (),
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}
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}
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}
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}
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i = (i + 1) % 3;
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}
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}
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println!("{}", result);
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}
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fn read_lines<P>(filename: P) -> io::Result<io::Lines<io::BufReader<File>>>
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where P: AsRef<Path>, {
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let file = File::open(filename)?;
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Ok(io::BufReader::new(file).lines())
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}
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