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playing with scan_fmt! omg <3

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This commit is contained in:
Ray Slakinski 2020-12-03 14:45:10 -05:00
parent a0f7d2f25a
commit 8c36dff3d1
2 changed files with 7 additions and 13 deletions
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1
2020/day_2/Cargo.toml
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@ -7,3 +7,4 @@ edition = "2018"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies] [dependencies]
scan_fmt = "0.2.5"

19
2020/day_2/src/main.rs
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@ -1,3 +1,5 @@
#[macro_use]
extern crate scan_fmt;
fn main() { fn main() {
let mut passline: Vec<String> = Vec::new(); let mut passline: Vec<String> = Vec::new();
let contents = std::fs::read_to_string("input1").unwrap(); let contents = std::fs::read_to_string("input1").unwrap();
@ -6,22 +8,13 @@ fn main() {
} }
let mut valid_passwords = 0; let mut valid_passwords = 0;
for line in passline.iter() { for line in passline.iter() {
let psplit: Vec<&str> = line.split(" ").collect(); let (min, max, key, pass) =
let r: Vec<&str> = psplit[0].split("-").collect(); scan_fmt!(&line, "{}-{} {}: {}", usize, usize, char, String).unwrap();
let min: usize = r[0].parse().unwrap(); if (pass.as_bytes()[min - 1] == key as u8 && pass.as_bytes()[max - 1] != key as u8)
let max: usize = r[1].parse().unwrap(); || (pass.as_bytes()[min - 1] != key as u8 && pass.as_bytes()[max - 1] == key as u8)
let key: u8 = psplit[1].chars().next().unwrap() as u8;
let pass = psplit[2];
// let c = pass.matches(key).count();
// if c >= min && c <= max {
// valid_passwrods += 1;
// }
if (pass.as_bytes()[min - 1] == key && pass.as_bytes()[max - 1] != key)
|| (pass.as_bytes()[min - 1] != key && pass.as_bytes()[max - 1] == key)
{ {
valid_passwords += 1; valid_passwords += 1;
} }
// print!("{} {} {} {}\n", min, max, key, pass);
} }
print!("Valid Passwords Found: {}\n", valid_passwords); print!("Valid Passwords Found: {}\n", valid_passwords);
} }