Rust Day 3
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GPG key ID:
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6 changed files with 385 additions and 3 deletions
2
rust/Cargo.lock
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2
rust/Cargo.lock
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@ -4,4 +4,4 @@ version = 3
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[[package]]
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name = "advent-of-code"
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version = "22.2.2"
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version = "22.3.2"
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@ -1,6 +1,6 @@
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[package]
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name = "advent-of-code"
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version = "22.2.2"
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version = "22.3.2"
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edition = "2021"
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resolver = "2"
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@ -33,4 +33,8 @@ path = "src/day01/main.rs"
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[[bin]]
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name = "day02"
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path = "src/day02/main.rs"
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path = "src/day02/main.rs"
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[[bin]]
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name = "day03"
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path = "src/day03/main.rs"
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300
rust/src/day03/input.txt
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300
rust/src/day03/input.txt
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ghcgScNNSsCvGSzmpVFlZbrzcFcV
|
||||
MWWRLRqqqdQwTtLjjmqMlFpFlzVnbFVDwplFzlDr
|
||||
LHMHqdHWjdQMdMtLHHLtWjJRsGCGSNghmSvPBJBNhsGfvfGP
|
||||
CbVqqqDbcbMHnnDqcCbrRFCfBvvwGjzrBwQGzrwwBjGwBQ
|
||||
sTPmpNWdWPTJssSSLPfNljjBvflGtjwwBzMG
|
||||
mmWgmgSZLTLMZWpnhqZbhFFCnhqnnn
|
||||
QQmjmZqnmQrfTZlbbcVbBcfbHfzf
|
||||
vpdSNShNppFdSRtdGBqvJBDlDzqbPPHVBH
|
||||
tRNSNRFhNpSRhFRMFtGhRGswLZZsZqWnmrmZwqwsTZmmmQ
|
||||
gGWCllFCGWtGGWdlGlWNZdwpnnSbwpMvpphZpndn
|
||||
RsshDDLcQVMSJQwJwnvw
|
||||
HVPzrPcDNhPFGhPC
|
||||
jtHQGHjGGtdTLjnqTQlmvRPRPBBwRBnFPPWP
|
||||
hZbzNzVrczZzcbNssVspZZVvBwbmPmJPWmvbBRvPlmvRJF
|
||||
fzNVDsZMhzpVhpVhlZcMNfcDDdQTLTjGDTCqGCjtSQHdHL
|
||||
GrbFggGrTrzSrgfwJjdTmwmNJZJd
|
||||
VMPQplPDptchwdsjmlml
|
||||
MqMWtBDPPWDWHQtvqQtWPjbzCGLgSBgGbzgrzFgnnz
|
||||
fcJccCcwcDfcpbRnCfWJnQJqtqtqPQdsGdgPsgTQqg
|
||||
LSjVMhzSFFrljdNbltNGtgdqQq
|
||||
MMhSHFFMLzBWDcHHcfcHwb
|
||||
rwmWtJWMwSNRJMtwNmMrrSsmtTjjlgqnTqZZZPlHnTngTTgn
|
||||
BGqGqqFBFggjjdGHlj
|
||||
QDhhLbDQCDFMNcmhRhqJNW
|
||||
BnRnRvMnLGLSCHvvSnlRfWbbTNQJsJsbNbJTBfQT
|
||||
tzMmmMwjhcpFjDmMcptrcjzFQggfQPTsWsfgNbbgfhJbPhQT
|
||||
FdzcrtDwDMtcwtFGRZdRLvdnHRSZZv
|
||||
HVpsSpvjpNjsBmbGFBnMNnDM
|
||||
WRRWhZtfrVtLJrBZMnDmDbnZBTGF
|
||||
thhPLzWzhzwPtLRLWrQlpPvvClcVcCppSvpl
|
||||
lZPbhnZLRPnnPZZPdlGMBWcBMgMQHBBcvvvzBL
|
||||
jpFjmwwwCDDbsjvjjgcvQgcNBQ
|
||||
rbFmppbwhqhGRGZr
|
||||
ggrLwFgWCBwbMWBbFwLMgNBZdmZHclJPllnJlNRPmSNZRR
|
||||
ppszzDfhDfhsqpnvDVTfGpSPlPmclHcdRcZmmmdPPGSP
|
||||
pvtDDVDVpqDfzDfngBLCwQrgCtCwFwrg
|
||||
pbGjFFGGDjpbsGsmNhNFNRBBBtRhhhHv
|
||||
JnczJVCvwWJvhPgghgNtNtNJ
|
||||
nwVSSzdzzqSpvQSZQG
|
||||
mssLLttQrsMrMzLCRmMmrrSQpvWpDNlBTBDlvNTccDQl
|
||||
HdHJwJqVPwHnqJwbjJbGjnSgSTWPpNgWWpgBBgcvDWWN
|
||||
ZHVwVZGwwdndqJVJqfHbGwnwrRLtLMftMvMMRrhmLMthhLmz
|
||||
RgHGLbTqlZlPRZPHfvvfZttJnvfvjnzr
|
||||
sVcChDVDccwNhhvjTvVzWJjnzFff
|
||||
mpNcCMTCGmLqBLGH
|
||||
wVJwHJHVMtMpBmDDWPQVPWDGDD
|
||||
zCrlZzCblBvnCDWNGLmvGDLPNG
|
||||
dqZglgbzrzbbgZqzTFSBHHFJSSSfjjSMfwhj
|
||||
NMWJSjLMCnHHNMNNHWCHMbVVGBPZTrPVPBVDrBSDGTTr
|
||||
zvttlFpgdtldwwvftPDPTWQdBZrsrWrGBZ
|
||||
hFlFmhRFvfCbmWJWHcnj
|
||||
19
rust/src/day03/main.rs
Normal file
19
rust/src/day03/main.rs
Normal file
|
|
@ -0,0 +1,19 @@
|
|||
const INPUT: &str = include_str!("input.txt");
|
||||
|
||||
mod part_1;
|
||||
use part_1::part_1;
|
||||
mod part_2;
|
||||
use part_2::part_2;
|
||||
|
||||
pub(crate) fn character_priority(character: u8) -> u64 {
|
||||
(match character {
|
||||
b'a'..=b'z' => character - b'a' + 1,
|
||||
b'A'..=b'Z' => character - b'A' + 27,
|
||||
_ => panic!("Invalid character '{character}', no priority"),
|
||||
}) as u64
|
||||
}
|
||||
|
||||
pub fn main() {
|
||||
part_1(INPUT);
|
||||
part_2(INPUT);
|
||||
}
|
||||
36
rust/src/day03/part_1.rs
Normal file
36
rust/src/day03/part_1.rs
Normal file
|
|
@ -0,0 +1,36 @@
|
|||
use std::collections::HashSet;
|
||||
|
||||
pub(crate) fn part_1(input: &'static str) {
|
||||
let rucksacks = input.lines();
|
||||
let compartments = rucksacks.map(|rucksack| {
|
||||
let compartment_size = rucksack.len() / 2;
|
||||
let compartments = (
|
||||
rucksack
|
||||
.bytes()
|
||||
.take(compartment_size)
|
||||
.collect::<HashSet<_>>(),
|
||||
rucksack
|
||||
.bytes()
|
||||
.skip(compartment_size)
|
||||
.take(compartment_size)
|
||||
.collect::<HashSet<_>>(),
|
||||
);
|
||||
compartments
|
||||
});
|
||||
let mut running_sum = 0;
|
||||
for compartments in compartments {
|
||||
let same_bytes =
|
||||
HashSet::intersection(&compartments.0, &compartments.1).collect::<Vec<_>>();
|
||||
assert_eq!(
|
||||
same_bytes.len(),
|
||||
1,
|
||||
"{}",
|
||||
same_bytes
|
||||
.iter()
|
||||
.map(|byte| char::from(**byte))
|
||||
.collect::<String>()
|
||||
);
|
||||
running_sum += crate::character_priority(*same_bytes[0]);
|
||||
}
|
||||
println!("Part 1: {running_sum}");
|
||||
}
|
||||
23
rust/src/day03/part_2.rs
Normal file
23
rust/src/day03/part_2.rs
Normal file
|
|
@ -0,0 +1,23 @@
|
|||
use std::collections::HashSet;
|
||||
|
||||
use crate::character_priority;
|
||||
|
||||
pub(crate) fn part_2(input: &'static str) {
|
||||
let rucksacks = input.lines();
|
||||
let compartments = rucksacks
|
||||
.map(|rucksack| rucksack.bytes().collect::<HashSet<_>>())
|
||||
.collect::<Vec<_>>();
|
||||
assert_eq!(compartments.len() % 3, 0);
|
||||
|
||||
let mut running_sum = 0;
|
||||
for group_compartments in compartments.chunks_exact(3) {
|
||||
let group_bytes = &group_compartments[0]
|
||||
.intersection(&group_compartments[1])
|
||||
.copied()
|
||||
.filter(|byte| group_compartments[2].contains(byte))
|
||||
.collect::<Vec<_>>();
|
||||
assert_eq!(group_bytes.len(), 1);
|
||||
running_sum += character_priority(group_bytes[0]);
|
||||
}
|
||||
println!("Part 2: {running_sum}");
|
||||
}
|
||||
Loading…
Reference in a new issue