Move Day 1 into its own file/module

wip
Alpha Chen 9 years ago
parent fcd7f65d71
commit 0eb87d8166

@ -0,0 +1,61 @@
use std::io;
use std::str::Chars;
use day;
pub struct Day01 {
input: String,
}
impl day::Day for Day01 {
fn new(input: String) -> Day01 {
Day01 { input: input }
}
fn solve(self) -> io::Result<i32> {
let elevator = Elevator::new(self.input);
Ok(1 + elevator.run().position(|f| f == -1).unwrap_or(0) as i32)
}
}
struct Elevator {
instructions: String,
}
impl<'a> Elevator {
fn new(input: String) -> Self {
Elevator { instructions: input }
}
fn run(self: &'a Self) -> ElevatorIterator<'a> {
ElevatorIterator {
chars: self.instructions.chars(),
floor: 0,
}
}
}
struct ElevatorIterator<'a> {
chars: Chars<'a>,
floor: i32,
}
impl<'a> Iterator for ElevatorIterator<'a> {
type Item = i32;
fn next(&mut self) -> Option<i32> {
match self.chars.next() {
Some('(') => {
self.floor += 1;
Some(self.floor)
},
Some(')') => {
self.floor -= 1;
Some(self.floor)
},
_ => {
None
},
}
}
}

@ -1,63 +1,5 @@
use std::io;
use std::str::Chars;
pub use day::Day; pub use day::Day;
pub use day_01::Day01;
mod day; mod day;
mod day_01;
pub struct Day01 {
input: String,
}
impl day::Day for Day01 {
fn new(input: String) -> Day01 {
Day01 { input: input }
}
fn solve(self) -> io::Result<i32> {
let elevator = Elevator::new(self.input);
Ok(1 + elevator.run().position(|f| f == -1).unwrap_or(0) as i32)
}
}
struct Elevator {
instructions: String,
}
impl<'a> Elevator {
fn new(input: String) -> Self {
Elevator { instructions: input }
}
fn run(self: &'a Self) -> ElevatorIterator<'a> {
ElevatorIterator {
chars: self.instructions.chars(),
floor: 0,
}
}
}
struct ElevatorIterator<'a> {
chars: Chars<'a>,
floor: i32,
}
impl<'a> Iterator for ElevatorIterator<'a> {
type Item = i32;
fn next(&mut self) -> Option<i32> {
match self.chars.next() {
Some('(') => {
self.floor += 1;
Some(self.floor)
},
Some(')') => {
self.floor -= 1;
Some(self.floor)
},
_ => {
None
},
}
}
}

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