54 lines
1.3 KiB
Rust
54 lines
1.3 KiB
Rust
pub fn day2() {
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// let input = r#"
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// forward 5
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// down 5
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// forward 8
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// up 3
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// down 8
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// forward 2
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// "#;
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let input = include_str!("../input/day2.txt");
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let mut x = 0;
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let mut d = 0;
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for line in input.trim().lines() {
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let parts: Vec<&str> = line.trim().split(' ').collect();
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let amount: i32 = parts.get(1).unwrap().parse().unwrap();
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match *parts.get(0).unwrap() {
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"forward" => {
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x += amount;
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}
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"down" => {
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d += amount;
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}
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"up" => {
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d -= amount;
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}
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_ => panic!(),
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}
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}
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println!("{}", x * d);
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x = 0;
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d = 0;
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let mut aim = 0;
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for line in input.trim().lines() {
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let parts: Vec<&str> = line.trim().split(' ').collect();
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let amount: i32 = parts.get(1).unwrap().parse().unwrap();
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match *parts.get(0).unwrap() {
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"forward" => {
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x += amount;
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d += aim * amount;
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}
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"down" => {
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aim += amount;
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}
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"up" => {
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aim -= amount;
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}
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_ => panic!(),
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}
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}
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println!("{}", x * d);
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}
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