39 lines
1.2 KiB
Rust
39 lines
1.2 KiB
Rust
use std::collections::HashMap;
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use std::fs::File;
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use std::io::{prelude::*, BufReader};
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fn main() -> std::io::Result<()> {
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//Read in file
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let file = File::open("input")?;
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let reader = BufReader::new(file);
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reader.lines().enumerate().for_each(|(line_no, line)| {
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let line = line.unwrap();
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'checker: for i in 4..line.len() {
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let window = line[(i - 4)..i].to_string();
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let mut holder: HashMap<char, bool> = HashMap::new();
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for c in window.chars() {
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if holder.contains_key(&c) {
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continue 'checker;
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}
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holder.insert(c, true);
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}
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println!("Part 1: line: {} marker at: {}", line_no, i);
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break;
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}
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'checker: for i in 14..line.len() {
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let window = line[(i - 14)..i].to_string();
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let mut holder: HashMap<char, bool> = HashMap::new();
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for c in window.chars() {
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if holder.contains_key(&c) {
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continue 'checker;
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}
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holder.insert(c, true);
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}
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println!("Part 2: line: {} marker at: {}", line_no, i);
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break;
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}
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});
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Ok(())
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}
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