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31 lines
692 B
31 lines
692 B
mod elven_calories; |
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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 clap::Arg; |
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use clap::Command; |
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use itertools::Itertools; |
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use elven_calories::Elvish; |
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fn main() { |
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let matches = Command::new("Day1").arg(Arg::new("filename")).get_matches(); |
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let filename = matches |
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.get_one::<String>("filename") |
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.expect("Need a filename"); |
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println!("Processing {}...", filename); |
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let file = File::open(filename).expect("Can't read file"); |
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let reader = BufReader::new(file); |
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let calories = reader |
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.lines() |
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.elf() |
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.sorted_by(|a, b| b.cmp(a)) |
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.take(3) |
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.sum::<u32>(); |
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println!("Sum: {:?}", calories) |
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}
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