40 lines
1.1 KiB
Rust
40 lines
1.1 KiB
Rust
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use std::fs::File;
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use std::io::prelude::*;
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use std::io::Result;
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use std::time::Instant;
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fn main() -> Result<()> {
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let start_time = Instant::now();
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let mut x = File::open("./data").expect("file not found");
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let mut content = String::new();
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x.read_to_string(&mut content)?;
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// Part 1
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let mut elf: Vec<i32> = content
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.split("\n")
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.collect::<Vec<&str>>()
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.split(|line| line.is_empty())
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.map(|line| line.iter().fold(0, |acc, x| acc + x.parse::<i32>().unwrap()))
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.collect();
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// Part 1 version 2
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// let mut elf: Vec<i32> = content
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// .lines()
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// .map(|line| line.parse::<i32>().unwrap_or_default())
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// .collect::<Vec<i32>>()
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// .split(|line| *line == 0)
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// .map(|x| x.iter().fold(0, |acc, x| acc + x))
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// .collect();
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println!("Elf with: {} Calories", elf.iter().max().unwrap());
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let duration = start_time.elapsed();
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println!("{:?}", duration);
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// Part 2
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elf.sort();
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let max = elf.pop().unwrap();
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let mid = elf.pop().unwrap();
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let min = elf.pop().unwrap();
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println!("{:?}", max + mid + min);
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Ok(())
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}
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