65 lines
1.1 KiB
Rust
65 lines
1.1 KiB
Rust
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mod common;
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fn main() {
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let calories = ordered_calories(&common::day_input(1));
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println!("Part 1: {}", part1(&calories));
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println!("Part 2: {}", part2(&calories));
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}
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fn ordered_calories(input: &str) -> Vec<i32> {
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let mut result = Vec::from([0_i32]);
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for l in input.lines() {
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if l.trim() == "" {
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result.push(0);
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} else {
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if let Ok(v) = l.parse::<i32>() {
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*(result.last_mut().unwrap()) += v;
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}
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}
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}
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result.sort_by(|a, b| b.partial_cmp(a).unwrap());
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result
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}
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fn part1(calories: &Vec<i32>) -> i32 {
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calories[0]
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}
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fn part2(calories: &Vec<i32>) -> i32 {
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calories.iter().take(3).sum()
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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const TEST_INPUT: &str = "1000
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2000
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3000
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4000
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5000
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6000
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7000
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8000
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9000
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10000";
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fn test_calories() -> Vec<i32> {
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ordered_calories(TEST_INPUT)
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}
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#[test]
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fn test_part1() {
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assert_eq!(part1(&test_calories()), 24000)
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}
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#[test]
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fn test_part2() {
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assert_eq!(part2(&test_calories()), 45000)
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}
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}
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