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26 lines
953 B
26 lines
953 B
use std::error;
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use std::fs::File;
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use std::io::BufRead;
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use std::io::BufReader;
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use std::ops;
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fn main() -> Result<(), Box<dyn error::Error>> {
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let f = File::open("input.txt")?;
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let reader = BufReader::new(f);
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let mut count: u32 = 0;
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for line in reader.lines() {
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let line = line?;
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let range_strs = line.split(",").collect::<Vec<&str>>();
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let range_a_u32 = range_strs[0].split("-").map(|x| x.parse::<u32>().unwrap()).collect::<Vec<u32>>();
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let range_a = ops::Range { start: range_a_u32[0], end: range_a_u32[1] + 1 };
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let range_b_u32 = range_strs[1].split("-").map(|x| x.parse::<u32>().unwrap()).collect::<Vec<u32>>();
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let range_b = ops::Range { start: range_b_u32[0], end: range_b_u32[1] + 1 };
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if range_a.contains(&range_b.start) || range_a.contains(&(range_b.end - 1)) || range_b.contains(&range_a.start) || range_b.contains(&(range_a.end - 1)) {
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count += 1;
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}
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}
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println!("Found {} overlapping ranges.", count);
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Ok(())
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}
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