58 lines
1.4 KiB
Rust
58 lines
1.4 KiB
Rust
use base::*;
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fn calc_prio(item: char) -> u32{
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if item.is_lowercase() {
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item as u32 - ('a' as u32) + 1
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} else {
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item as u32 - ('A' as u32) + 27
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}
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}
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fn main() {
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let lines = read_file("day3.txt");
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let sum = lines.iter()
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.map(|line|line.split_at(line.len() / 2))
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.map(|(first_half, second_half)| {
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for char_0 in first_half.chars() {
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for char_1 in second_half.chars() {
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if char_0 == char_1 {
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return Some(char_0);
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}
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}
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}
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None
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})
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.map(|item| {
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match item{
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None => 0,
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Some(item) => calc_prio(item)
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}
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}).sum::<u32>();
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println!("Task 1: {sum}");
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let sum = lines.chunks_exact(3).map(|chunk| {
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for char_0 in chunk[0].chars() {
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for char_1 in chunk[1].chars() {
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if char_0 == char_1 {
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for char_2 in chunk[2].chars() {
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if char_1 == char_2 {
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return Some(char_0);
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}
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}
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}
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}
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}
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None
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}).map(|item|{
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match item {
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None => 0,
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Some(item) => calc_prio(item)
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}
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}).sum::<u32>();
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println!("Task 2: {sum}");
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} |