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Added day09 solutions
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Russell Champoux committed
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[root]
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name = "day09"
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version = "0.1.0"
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dependencies = [
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"regex 0.1.80 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "aho-corasick"
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version = "0.5.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"memchr 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "kernel32-sys"
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version = "0.2.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
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"winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "libc"
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version = "0.2.18"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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name = "memchr"
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version = "0.1.11"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"libc 0.2.18 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "regex"
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version = "0.1.80"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"aho-corasick 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
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"memchr 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
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"regex-syntax 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
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"thread_local 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
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"utf8-ranges 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "regex-syntax"
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version = "0.3.9"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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name = "thread-id"
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version = "2.0.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
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"libc 0.2.18 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "thread_local"
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version = "0.2.7"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"thread-id 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "utf8-ranges"
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version = "0.1.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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name = "winapi"
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version = "0.2.8"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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name = "winapi-build"
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version = "0.1.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[metadata]
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"checksum aho-corasick 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)" = "ca972c2ea5f742bfce5687b9aef75506a764f61d37f8f649047846a9686ddb66"
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"checksum kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7507624b29483431c0ba2d82aece8ca6cdba9382bff4ddd0f7490560c056098d"
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"checksum libc 0.2.18 (registry+https://github.com/rust-lang/crates.io-index)" = "a51822fc847e7a8101514d1d44e354ba2ffa7d4c194dcab48870740e327cac70"
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"checksum memchr 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)" = "d8b629fb514376c675b98c1421e80b151d3817ac42d7c667717d282761418d20"
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"checksum regex 0.1.80 (registry+https://github.com/rust-lang/crates.io-index)" = "4fd4ace6a8cf7860714a2c2280d6c1f7e6a413486c13298bbc86fd3da019402f"
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"checksum regex-syntax 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)" = "f9ec002c35e86791825ed294b50008eea9ddfc8def4420124fbc6b08db834957"
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"checksum thread-id 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a9539db560102d1cef46b8b78ce737ff0bb64e7e18d35b2a5688f7d097d0ff03"
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"checksum thread_local 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)" = "8576dbbfcaef9641452d5cf0df9b0e7eeab7694956dd33bb61515fb8f18cfdd5"
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"checksum utf8-ranges 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "a1ca13c08c41c9c3e04224ed9ff80461d97e121589ff27c753a16cb10830ae0f"
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"checksum winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "167dc9d6949a9b857f3451275e911c3f44255842c1f7a76f33c55103a909087a"
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"checksum winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2d315eee3b34aca4797b2da6b13ed88266e6d612562a0c46390af8299fc699bc"
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@@ -0,0 +1,7 @@
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[package]
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name = "day09"
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version = "0.1.0"
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authors = ["Russell Champoux <russell.champoux@thomsonreuters.com>"]
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[dependencies]
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regex = "0.1"
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@@ -0,0 +1,87 @@
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extern crate regex;
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use regex::Regex;
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use std::io::Read;
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use std::fs::File;
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fn part_1(input: &String) {
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let set: Vec<char> = input.chars().collect();
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let mut idx: usize = 0;
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let mut output = String::new();
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let re = Regex::new(r"\((\d+)x(\d+)\)").unwrap();
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//step by single characters
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//when you find an open paren, look for the next closing paren and match to a regex like (x,y)
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//if it does not match, add contents to output and continue
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//if it matches, add the next 'x' characters to the output 'y' times and increase idx by 'x'
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//if not an open paren, add to output
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while idx < input.len() {
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let c = set[idx];
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match c {
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'(' => {
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let old_idx: usize = idx; //for when we have to colleect the slice
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loop {
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idx = idx + 1;
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match set[idx] {
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')' => break,
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_ => {},
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}
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}
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let cap_slice = &input[old_idx..idx+1];
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let cap = re.captures(cap_slice).unwrap();
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let char_count: usize = cap.at(1).unwrap().parse().unwrap();
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let times = cap.at(2).unwrap().parse().unwrap();
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print!("({}x{}) ", char_count, times);
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//println!("({}x{}) adding slice from {} to {}", char_count, times, idx, idx+char_count);
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for time in 0..times {
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output = output + &input[idx+1..idx+char_count+1]; //copy the next char_count characters
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}
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idx = idx + char_count; //skip over all the chars we added
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},
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_ => {
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output.push(c);
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//println!("{} input is len {}", idx, input.len());
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},
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}
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idx = idx + 1; //increment idx in every case
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}
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println!("Final size is {}", output.len());
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}
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fn get_count(input: &String) -> usize {
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let re_letters = Regex::new(r"^[^\(\)]*$").unwrap(); //I'd prefer to make this static but don't know how
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if re_letters.is_match(&input) { //if there are no parens
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return input.len(); //return the length
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}
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let re = Regex::new(r"^([:alpha:]*)\((\d+)x(\d+)\)(.*)$").unwrap();
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match re.captures(input) {
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None => println!("Found nothing!"),
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Some(cap) => {
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let letters = cap.at(1).unwrap().to_string();
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let count: usize = cap.at(2).unwrap().parse().unwrap();
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let times: usize = cap.at(3).unwrap().parse().unwrap();
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let subslice = &cap.at(4).unwrap()[0..count].to_string();
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let therest = &cap.at(4).unwrap()[count..].to_string();
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//println!("Found: {} - {},{}", cap.at(1).unwrap(), cap.at(2).unwrap(), cap.at(3).unwrap()),
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println!("({},{}) - {}x {}", count, times, times, subslice);
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return get_count(&letters) + times * get_count(subslice) + get_count(therest);
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}
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}
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0
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}
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fn part_2(input: &String) {
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println!("Part 2: Length is {}", get_count(input));
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}
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fn main() {
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let mut file = File::open("./data").expect("could not open file");
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let mut input = String::new();
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file.read_to_string(&mut input).expect("could not read file");
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//part_1(&input);
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part_2(&input);
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}
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