tests « cgit « git.causal.agency « www - src

Mode	Name	Size
-rw-r--r--	.gitignore	33	log plain blame
-rw-r--r--	Makefile	273	log plain blame
d---------	filters	35	log plain
-rwxr-xr-x	setup.sh	3428	log plain blame
-rwxr-xr-x	t0001-validate-git-versions.sh	1306	log plain blame
-rwxr-xr-x	t0010-validate-html.sh	933	log plain blame
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-rwxr-xr-x	t0101-index.sh	715	log plain blame
-rwxr-xr-x	t0102-summary.sh	920	log plain blame
-rwxr-xr-x	t0103-log.suse std::io::{self, Read}; fn reverse(ring: &mut Vec<u32>, index: usize, len: usize) { for i in 0..(len / 2) { let a = (index + i) % ring.len(); let b = (index + len - 1 - i) % ring.len(); let x = ring[a]; ring[a] = ring[b]; ring[b] = x; } } fn solve1(size: u32, input: &str) -> u32 { let mut ring: Vec<_> = (0..size).collect(); let mut index = 0; let mut skip = 0; for len in input.split(',').map(str::parse).map(Result::unwrap) { reverse(&mut ring, index, len); index += len + skip; index %= ring.len(); skip += 1; } ring[0] * ring[1] } fn solve2(input: &str) -> String { let mut ring: Vec<_> = (0..256).collect(); let mut index = 0; let mut skip = 0; let mut lens: Vec<_> = input.as_bytes().to_vec(); lens.extend(&[17, 31, 73, 47, 23]); for _ in 0..64 { for len in lens.iter().cloned() { reverse(&mut ring, index, len as usize); index += len as usize + skip; index %= ring.len(); skip += 1; } } ring.chunks(16) .map(\|chunk\| chunk.iter().fold(0, \|a, b\| a ^ b)) .map(\|n\| format!("{:02x}", n)) .collect() } fn main() { let mut input = String::new(); io::stdin().read_to_string(&mut input).unwrap(); println!("Part 1: {}", solve1(256, input.trim())); println!("Part 2: {}", solve2(input.trim())); } #[test] fn part1() { assert_eq!(12, solve1(5, "3,4,1,5")); } #[test] fn part2() { assert_eq!("a2582a3a0e66e6e86e3812dcb672a272", solve2("")); assert_eq!("33efeb34ea91902bb2f59c9920caa6cd", solve2("AoC 2017")); assert_eq!("3efbe78a8d82f29979031a4aa0b16a9d", solve2("1,2,3")); assert_eq!("63960835bcdc130f0b66d7ff4f6a5a8e", solve2("1,2,4")); }