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advent/2020/day_5/src/main.rs

26 lines
763 B
Rust

fn main() {
let contents = std::fs::read_to_string("input").unwrap();
let mut passes = Vec::new();
for line in contents.lines() {
let code = line
.chars()
.map(|c| match c {
'L' | 'F' => '0',
'R' | 'B' => '1',
_ => c,
})
.collect::<String>();
let code_in_bin = isize::from_str_radix(&code.to_string(), 2).unwrap() as u32;
passes.push(code_in_bin);
}
passes.sort();
// println!("{:?}", passes);
let min: u32 = passes.first().cloned().unwrap();
let max: u32 = passes.last().cloned().unwrap();
for i in min..max {
if !passes.contains(&i) {
println!("Seat {} is empy", i);
}
}
}